diff --git a/profiles/templates/3.5/6_ac_update_sync/world/grp/sci-misc b/profiles/templates/3.5/6_ac_update_sync/world/grp/sci-misc
new file mode 100644
index 00000000..f638e55a
--- /dev/null
+++ b/profiles/templates/3.5/6_ac_update_sync/world/grp/sci-misc
@@ -0,0 +1,5 @@
+# Calculate name=world format=world
+
+#?in(os_linux_pkglist, CB4)!=#
+#-world(#-cl_pass_file-#)-#
+#in#
diff --git a/profiles/templates/3.5/6_ac_update_sync/world/grp/sci-physics b/profiles/templates/3.5/6_ac_update_sync/world/grp/sci-physics
index f638e55a..fe082fe2 100644
--- a/profiles/templates/3.5/6_ac_update_sync/world/grp/sci-physics
+++ b/profiles/templates/3.5/6_ac_update_sync/world/grp/sci-physics
@@ -1,5 +1,10 @@
 # Calculate name=world format=world
 
+#?in(os_linux_pkglist, CB3)!=#
+cernlib-montecarlo
+#in#
+
 #?in(os_linux_pkglist, CB4)!=#
 #-world(#-cl_pass_file-#)-#
+!!cernlib-montecarlo:0
 #in#