diff --git a/PRIVATE b/PRIVATE
index 5a769ec75..532cfadc1 160000
--- a/PRIVATE
+++ b/PRIVATE
@@ -1 +1 @@
-Subproject commit 5a769ec759d9dacc1866c35c6663cd0001e198c5
+Subproject commit 532cfadc1fda4f0f7f6a993e2bd029f14a50668f
diff --git a/src/mesh/FEM_utilities.f90 b/src/mesh/FEM_utilities.f90
index a3856ccaa..d9e985ebd 100644
--- a/src/mesh/FEM_utilities.f90
+++ b/src/mesh/FEM_utilities.f90
@@ -123,9 +123,7 @@ subroutine FEM_utilities_init
   call PetscOptionsInsertString(PETSC_NULL_OPTIONS,'-mechanical_snes_type newtonls &
                                &-mechanical_snes_linesearch_type cp -mechanical_snes_ksp_ew &
                                &-mechanical_snes_ksp_ew_rtol0 0.01 -mechanical_snes_ksp_ew_rtolmax 0.01 &
-                               &-mechanical_ksp_type fgmres -mechanical_ksp_max_it 25 &
-                               &-mechanical_pc_type ml -mechanical_mg_levels_ksp_type chebyshev &
-                               &-mechanical_mg_levels_pc_type sor -mechanical_pc_ml_nullspace user',ierr)
+                               &-mechanical_ksp_type fgmres -mechanical_ksp_max_it 25', ierr)
   CHKERRQ(ierr)
   call PetscOptionsInsertString(PETSC_NULL_OPTIONS,num_mesh%get_asString('PETSc_options',defaultVal=''),ierr)
   CHKERRQ(ierr)
@@ -151,6 +149,7 @@ subroutine utilities_constitutiveResponse(timeinc,P_av,forwardData)
 
   PetscErrorCode :: ierr
 
+
   print'(/,a)', ' ... evaluating constitutive response ......................................'
 
   call homogenization_mechanical_response(timeinc,[1,mesh_maxNips],[1,mesh_NcpElems])                ! calculate P field