diff --git a/Exec/science/subch_planar/GNUmakefile b/Exec/science/subch_planar/GNUmakefile
index e7eebb65ad..a9c4d6cae1 100644
--- a/Exec/science/subch_planar/GNUmakefile
+++ b/Exec/science/subch_planar/GNUmakefile
@@ -11,7 +11,9 @@ USE_OMP          = FALSE
 USE_GRAV         = TRUE
 USE_REACT        = TRUE
 
-USE_SHOCK_VAR = TRUE
+USE_SHOCK_VAR 	 = TRUE
+
+MAX_NPTS_MODEL 	 = 32678
 
 USE_MODEL_PARSER = TRUE
 
diff --git a/Exec/science/subch_planar/inputs_2d b/Exec/science/subch_planar/inputs_2d
index 9340972844..56d6d9854f 100644
--- a/Exec/science/subch_planar/inputs_2d
+++ b/Exec/science/subch_planar/inputs_2d
@@ -50,6 +50,7 @@ castro.sponge_timescale     = 1.0e-3
 castro.sum_interval   = 1       # timesteps between computing mass
 castro.v              = 1       # verbosity in Castro.cpp
 amr.v                 = 1       # verbosity in Amr.cpp
+castro.time_integration_method = 3 # uses SDC by default
 
 # REFINEMENT / REGRIDDING 
 amr.max_level       = 0       # maximum level number allowed