diff --git a/src/atom_vec.cpp b/src/atom_vec.cpp
index d73737c4c77..aa35c0a6283 100644
--- a/src/atom_vec.cpp
+++ b/src/atom_vec.cpp
@@ -1590,7 +1590,7 @@ int AtomVec::unpack_restart(double *buf)
    set other values to defaults
 ------------------------------------------------------------------------- */
 
-void AtomVec::create_atom(int itype, const double * const coord)
+void AtomVec::create_atom(int itype, double * coord)
 {
   int m, n, datatype, cols;
   void *pdata;
diff --git a/src/atom_vec.h b/src/atom_vec.h
index c278066583e..76493cbe505 100644
--- a/src/atom_vec.h
+++ b/src/atom_vec.h
@@ -120,7 +120,7 @@ class AtomVec : protected Pointers {
   virtual int pack_restart_bonus(int, double *) { return 0; }
   virtual int unpack_restart_bonus(int, double *) { return 0; }
 
-  virtual void create_atom(int, const double * const);
+  virtual void create_atom(int, double *);
   virtual void create_atom_post(int) {}
 
   virtual void data_atom(double *, imageint, const std::vector<std::string> &, std::string &);
diff --git a/src/domain.cpp b/src/domain.cpp
index f5eca86b706..6783906dcc8 100644
--- a/src/domain.cpp
+++ b/src/domain.cpp
@@ -2279,7 +2279,7 @@ void Domain::lamda2x(double *lamda, double *x)
    x and lamda can point to same 3-vector
 ------------------------------------------------------------------------- */
 
-void Domain::x2lamda(const double * const x, double *lamda)
+void Domain::x2lamda(double * x, double *lamda)
 {
   double delta[3];
   delta[0] = x[0] - boxlo[0];
diff --git a/src/domain.h b/src/domain.h
index e291fa0ceb5..8cecc2248cb 100644
--- a/src/domain.h
+++ b/src/domain.h
@@ -170,7 +170,7 @@ class Domain : protected Pointers {
   virtual void x2lamda(int);
   virtual void x2lamda(int, int);
   virtual void lamda2x(double *, double *);
-  virtual void x2lamda(const double * const, double *);
+  virtual void x2lamda(double *, double *);
   int inside(double *);
   int inside_nonperiodic(double *);
   void x2lamda(double *, double *, double *, double *);
diff --git a/src/fix_cluster_crush_delete.cpp b/src/fix_cluster_crush_delete.cpp
index 35e01ca36c7..4dc945e8820 100644
--- a/src/fix_cluster_crush_delete.cpp
+++ b/src/fix_cluster_crush_delete.cpp
@@ -108,17 +108,6 @@ FixClusterCrushDelete::FixClusterCrushDelete(LAMMPS* lmp, int narg, char** arg)
       vdist = DIST::DIST_GAUSSIAN;
       iarg += 2;
 
-    } else if (::strcmp(arg[iarg], "placement_scheme") == 0) {
-      // Placement scheme
-      if (::strcmp(arg[iarg+1], "inplace") == 0) {
-        placement_scheme = PLACEMENT_SCHEME::INPLACE;
-      } else if (::strcmp(arg[iarg+1], "migrate") == 0) {
-        placement_scheme = PLACEMENT_SCHEME::MIGRATE;
-      } else {
-        error->all(FLERR, "{}: unknown placement scheme: {}", style, arg[iarg+1]);
-      }
-      iarg += 2;
-
     } else if (::strcmp(arg[iarg], "noscreen") == 0) {
       // Do not output to screen
       screenflag = 0;
@@ -222,8 +211,6 @@ FixClusterCrushDelete::FixClusterCrushDelete(LAMMPS* lmp, int narg, char** arg)
 
   // further setup and error check
 
-  if (placement_scheme == PLACEMENT_SCHEME::MIGRATE) { pre_exchange_migrate = 1; }
-
   // Get temp compute
   auto temp_computes = lmp->modify->get_compute_by_style("temp");
   if (temp_computes.empty()) { error->all(FLERR, "{}: Cannot find compute with style 'temp'.", style); }
@@ -412,18 +399,18 @@ void FixClusterCrushDelete::pre_exchange()
   to_insert += atoms2move_total;
   int to_insert_prev = to_insert;
 
-  if (to_insert > 0) { add(); }
+  int ninserted = 0;
+  if (to_insert > 0) { ninserted = add(); }
+  to_insert -= ninserted;
 
   bigint nblocal = atom->nlocal;
   ::MPI_Allreduce(&nblocal, &atom->natoms, 1, MPI_LMP_BIGINT, MPI_SUM, world);
 
-  // if (comm->me == 0) { utils::logmesg(lmp, "{}: {} — fix cluster/crush: {}\n", update->ntimestep, atom->natoms, getCurrentTime()); }
-
   if (comm->me == 0) {
     // print status
     if (screenflag != 0) { utils::logmesg(lmp, "Crushed {} clusters -> deleted {} atoms.\n", clusters2crush_total, atoms2move_total); }
     if (fileflag != 0) {
-      fmt::print(fp, "{},{},{},{},{},{}\n", update->ntimestep, atom->natoms, clusters2crush_total, atoms2move_total, to_insert_prev - to_insert,
+      fmt::print(fp, "{},{},{},{},{},{}\n", update->ntimestep, atom->natoms, clusters2crush_total, atoms2move_total, ninserted,
                  to_insert);
       ::fflush(fp);
     }
@@ -445,12 +432,11 @@ void FixClusterCrushDelete::deleteAtoms(int atoms2move_local) noexcept(true)
 
 /* ---------------------------------------------------------------------- */
 
-void FixClusterCrushDelete::add()
+int FixClusterCrushDelete::add() const
 {
   int warnflag = 0;
   double _coord[3];
-  double r[3];
-  double vnew[3];
+  // double r[3];
 
   // clear ghost count (and atom map) and any ghost bonus data
   //   internal to AtomVec
@@ -558,28 +544,7 @@ void FixClusterCrushDelete::add()
     atom->map_set();
   }
 
-  if (placement_scheme == PLACEMENT_SCHEME::MIGRATE) {
-    // move atoms back inside simulation box and to new processors
-    // use remap() instead of pbc() in case atoms moved a long distance
-    // use irregular() in case atoms moved a long distance
-
-    double** x      = atom->x;
-    imageint* image = atom->image;
-    for (int i = 0; i < atom->nlocal; i++) domain->remap(x[i], image[i]);
-
-    if (domain->triclinic) domain->x2lamda(atom->nlocal);
-    domain->reset_box();
-    auto irregular = new Irregular(lmp);
-    irregular->migrate_atoms(1);
-    delete irregular;
-    if (domain->triclinic) domain->lamda2x(atom->nlocal);
-  }
-
-  if (comm->me == 0) { utils::logmesg(lmp, "{}: {}: {} atoms were inserted\n", style, update->ntimestep, ninserted); }
-
-  atom->tag_check();
-
-  to_insert -= ninserted;
+  return ninserted;
 }
 
 /* ---------------------------------------------------------------------- */
@@ -587,11 +552,9 @@ void FixClusterCrushDelete::add()
 int FixClusterCrushDelete::placement_check_me(const double* const newcoord, const double* const sublo, const double* const subhi, int nparticle, int nattempt) const {
   int flag = 0;
 
-  if (placement_scheme == PLACEMENT_SCHEME::MIGRATE) { return flag = comm->me == 0 ? 1 : 0; }
-
-  if (newcoord[0] > sublo[0] && newcoord[0] < subhi[0] &&
-      newcoord[1] > sublo[1] && newcoord[1] < subhi[1] &&
-      newcoord[2] > sublo[2] && newcoord[2] < subhi[2]) flag = 1;
+  if (newcoord[0] >= sublo[0] && newcoord[0] < subhi[0] &&
+      newcoord[1] >= sublo[1] && newcoord[1] < subhi[1] &&
+      newcoord[2] >= sublo[2] && newcoord[2] < subhi[2]) flag = 1;
   else if (domain->dimension == 3 && newcoord[2] >= domain->boxhi[2]) {
     if (comm->layout != Comm::LAYOUT_TILED) {
       if (comm->myloc[2] == comm->procgrid[2]-1 &&
@@ -612,45 +575,12 @@ int FixClusterCrushDelete::placement_check_me(const double* const newcoord, cons
     }
   }
 
-  check_coord_diff(newcoord, nparticle, nattempt, "placement_check");
   return flag;
 }
 
 /* ---------------------------------------------------------------------- */
 
-void FixClusterCrushDelete::check_coord_diff(const double* const newcoord, int nparticle, int nattempt, const char *name) const noexcept {
-  double multiplier = 1. / comm->nprocs;
-  double coordaverage[3] = {0, 0, 0};
-  double coordsum[3] = {0, 0, 0};
-  int min_seed = 0;
-  int max_seed = 0;
-  ::MPI_Allreduce(newcoord, coordaverage, 3, MPI_DOUBLE, MPI_SUM, world);
-  ::MPI_Allreduce(&xrandom->seed, &min_seed, 1, MPI_INT, MPI_MIN, world);
-  ::MPI_Allreduce(&xrandom->seed, &max_seed, 1, MPI_INT, MPI_MAX, world);
-  coordaverage[0] *= multiplier;
-  coordaverage[1] *= multiplier;
-  coordaverage[2] *= multiplier;
-  coordaverage[0] -= newcoord[0];
-  coordaverage[1] -= newcoord[1];
-  coordaverage[2] -= newcoord[2];
-  coordaverage[0] *= coordaverage[0];
-  coordaverage[1] *= coordaverage[1];
-  coordaverage[2] *= coordaverage[2];
-  ::MPI_Allreduce(coordaverage, coordsum, 3, MPI_DOUBLE, MPI_SUM, world);
-  coordsum[0] *= multiplier * multiplier;
-  coordsum[1] *= multiplier * multiplier;
-  coordsum[2] *= multiplier * multiplier;
-  coordsum[0] = ::sqrt(coordsum[0]);
-  coordsum[1] = ::sqrt(coordsum[1]);
-  coordsum[2] = ::sqrt(coordsum[2]);
-  if (comm->me == 0) {
-    utils::logmesg(lmp, "{}-{}-{}-{}: Coordinate stddev: ({}, {}, {}), seeds are {}\n", update->ntimestep, nparticle, nattempt, name, coordsum[0], coordsum[1], coordsum[2], min_seed == max_seed ? "sync" : "desync");
-  }
-}
-
-/* ---------------------------------------------------------------------- */
-
-void FixClusterCrushDelete::create_atom(const double* const coord, bigint tag) noexcept
+void FixClusterCrushDelete::create_atom(const double* const coord, bigint tag) const noexcept
 {
   atom->avec->create_atom(ntype, coord);
   int n          = atom->nlocal - 1;
@@ -691,7 +621,7 @@ const double* const FixClusterCrushDelete::gen_pos(double* const coord, int npar
   } else {
     error->all(FLERR, "{}: Unknown particle distribution", style);
   }
-  check_coord_diff(coord, nparticle, nattempt, "generation");
+  // check_coord_diff(coord, nparticle, nattempt, "generation");
   return coord;
 }
 
@@ -777,7 +707,7 @@ void FixClusterCrushDelete::postDelete() noexcept(true)
    first set x,y,z values in internal variables
 ------------------------------------------------------------------------- */
 
-int FixClusterCrushDelete::vartest(double x, double y, double z)
+int FixClusterCrushDelete::vartest(double x, double y, double z) const noexcept
 {
   if (xstr != nullptr) { input->variable->internal_set(vars[0], x); }
   if (ystr != nullptr) { input->variable->internal_set(vars[1], y); }
diff --git a/src/fix_cluster_crush_delete.h b/src/fix_cluster_crush_delete.h
index 1e1d3a25549..2495e4c5ee6 100644
--- a/src/fix_cluster_crush_delete.h
+++ b/src/fix_cluster_crush_delete.h
@@ -20,7 +20,6 @@ FixStyle(cluster/crush/delete,FixClusterCrushDelete);
 #include <array>
 
 enum class DIST {DIST_UNIFORM,DIST_GAUSSIAN};
-enum class PLACEMENT_SCHEME {INPLACE,MIGRATE};
 
 namespace LAMMPS_NS {
 class FixClusterCrushDelete : public Fix {
@@ -61,7 +60,6 @@ class FixClusterCrushDelete : public Fix {
   int maxtry = 1000;
   int ntype = 0;
   int groupid = 0;
-  PLACEMENT_SCHEME placement_scheme = PLACEMENT_SCHEME::INPLACE;
 
   //velocity and coordinates
   bool fix_temp = false;
@@ -79,12 +77,11 @@ class FixClusterCrushDelete : public Fix {
   void deleteAtoms(int atoms2move_local) noexcept(true);
   void postDelete() noexcept(true);
 
-  void add();
+  int add() const;
   const double* const gen_pos(double* const coord, int nparticle, int nattempt) const noexcept;
-  int vartest(double x, double y, double z);
+  int vartest(double x, double y, double z) const noexcept;
   bool check_overlap(const double* const coord) const noexcept;
-  void create_atom(const double* const coord, bigint tag) noexcept;
-  void check_coord_diff(const double* const newcoord, int nparticle, int nattempt, const char* name) const noexcept;
+  void create_atom(const double* const coord, bigint tag) const noexcept;
   int placement_check_me(const double* const newcoord, const double* const sublo, const double* const subhi, int nparticle, int nattempt) const;
 };
 
diff --git a/src/random_park.h b/src/random_park.h
index bb5d93e8c77..fa703e035ec 100644
--- a/src/random_park.h
+++ b/src/random_park.h
@@ -27,8 +27,8 @@ class RanPark : protected Pointers {
   void reset(int, double *);
   int state();
 
-  int seed, save;
  private:
+  int seed, save;
   double second;
 };
 
diff --git a/src/run.cpp b/src/run.cpp
index cf323bf8761..516bce5d0bc 100644
--- a/src/run.cpp
+++ b/src/run.cpp
@@ -23,11 +23,8 @@
 #include "output.h"
 #include "timer.h"
 #include "update.h"
-#include <cstring>
 
-#include "tim.hpp"
-#include "atom.h"
-#include "comm.h"
+#include <cstring>
 
 using namespace LAMMPS_NS;