diff --git a/namelist/gr_sim_B128_PM64.nml b/namelist/gr_sim_B128_PM64.nml
index b1dd46805662169688a41519ddd2005df88a03e8..a80dfd767d5741f16e273fc8a9dce1d4cdad2df8 100644
--- a/namelist/gr_sim_B128_PM64.nml
+++ b/namelist/gr_sim_B128_PM64.nml
@@ -25,8 +25,8 @@ initfile(1)='initial_conditions/B128_PM64_z49_ICs/ics'
 &AMR_PARAMS
 levelmin=6 
 levelmax=6 
-ngridtot=200000
-nparttot=400000
+ngridtot=400000
+nparttot=800000
 nexpand=1
 /
 
diff --git a/namelist/gr_sim_B256_PM128.nml b/namelist/gr_sim_B256_PM128.nml
index 2c1226d7354e26d49d1bc74adadd738f8d9fd78b..21a71c235cac1c4da2609f06bfac982c896eec82 100644
--- a/namelist/gr_sim_B256_PM128.nml
+++ b/namelist/gr_sim_B256_PM128.nml
@@ -25,8 +25,8 @@ initfile(1)='initial_conditions/B256_PM128_z49_ICs/ics'
 &AMR_PARAMS
 levelmin=7 
 levelmax=7 
-ngridtot=2000000
-nparttot=3000000
+ngridtot=4000000
+nparttot=6000000
 nexpand=1
 /
 
diff --git a/namelist/gr_sim_B256_PM64.nml b/namelist/gr_sim_B256_PM64.nml
index 764fd48cde8ad3123c118fa35219276094de50a2..bfdb8ee210adbdc3df5b8096383288583e1cb30e 100644
--- a/namelist/gr_sim_B256_PM64.nml
+++ b/namelist/gr_sim_B256_PM64.nml
@@ -25,8 +25,8 @@ initfile(1)='initial_conditions/B256_PM64_z49_ICs/ics'
 &AMR_PARAMS
 levelmin=6 
 levelmax=6 
-ngridtot=200000
-nparttot=400000
+ngridtot=400000
+nparttot=800000
 nexpand=1
 /
 
diff --git a/namelist/gr_sim_B32_PM128.nml b/namelist/gr_sim_B32_PM128.nml
index 6cae80b55ab9239eab50d24b6336b798827f0253..0eef2228ed09f319d0a9cd740c5ebc25a40fd05c 100644
--- a/namelist/gr_sim_B32_PM128.nml
+++ b/namelist/gr_sim_B32_PM128.nml
@@ -25,8 +25,8 @@ initfile(1)='initial_conditions/B32_PM128_z49_ICs/ics'
 &AMR_PARAMS
 levelmin=7 
 levelmax=7 
-ngridtot=2000000
-nparttot=3000000
+ngridtot=4000000
+nparttot=6000000
 nexpand=1
 /