diff --git a/examples/symba_energy_momentum/collision_movie.py b/examples/symba_energy_momentum/collision_movie.py
index 32be77e8d..2cf98a46d 100644
--- a/examples/symba_energy_momentum/collision_movie.py
+++ b/examples/symba_energy_momentum/collision_movie.py
@@ -11,7 +11,7 @@
 ymax = 20.0
 
 #cases = ['supercat_head', 'supercat_off', 'disruption_head', 'disruption_off']
-cases = ['disruption_off']
+cases = ['disruption_off', 'supercat_off']
 
 def scale_sim(ds, config):
 
@@ -302,6 +302,10 @@ def data_stream(self, frame=0):
         animfile = 'movies/disruption_headon.mp4'
         titletext = "Disruption- Head on"
         configfile = 'param.disruption_headon.in'
+    elif case == 'merger':
+        animfile = 'movies/merger.mp4'
+        titletext = "Merger"
+        configfile = 'param.merger.in'
     else:
         print(f'{case} is an unknown case')
         exit(-1)
diff --git a/examples/symba_energy_momentum/disruption_off_axis.in b/examples/symba_energy_momentum/disruption_off_axis.in
index 5773eee19..220bd74d5 100644
--- a/examples/symba_energy_momentum/disruption_off_axis.in
+++ b/examples/symba_energy_momentum/disruption_off_axis.in
@@ -9,10 +9,10 @@
 1.0 -4.20E-05 0.0
 0.00 6.28 0.0
 0.4 0.4 0.4 !Ip 
-0.0 0.0 0.0 !rot
+0.0 0.0 6.0e4 !rot
 3 7e-10 0.0004
 3.25e-06
 1.0 4.20E-05 0.0
 -0.80 -6.28 0.0
 0.4 0.4 0.4 !Ip 
-0.0 0.0 0.0 !rot
+0.0 0.0 1.0e5 !rot
diff --git a/examples/symba_energy_momentum/param.merger.in b/examples/symba_energy_momentum/param.merger.in
index 7c52e6ba0..1155e1b60 100644
--- a/examples/symba_energy_momentum/param.merger.in
+++ b/examples/symba_energy_momentum/param.merger.in
@@ -1,10 +1,7 @@
-!
-! Parameter file for Mars in SI units
-!
 T0             0.0e0
-TSTOP          0.10              ! simulation length in seconds = 100 years
-DT             0.01              ! stepsize in seconds
-PL_IN          merger.in
+TSTOP          0.000100            ! simulation length in seconds = 100 years
+DT             0.0000001              ! stepsize in seconds
+PL_IN          disruption_off_axis.in
 TP_IN          tp.in
 IN_TYPE        ASCII
 ISTEP_OUT      1                 ! output cadence every year
@@ -17,8 +14,8 @@ ISTEP_DUMP     1                 ! system dump cadence
 J2             0.0               ! no J2 term
 J4             0.0               ! no J4 term
 CHK_CLOSE      yes               ! check for planetary close encounters
-CHK_RMIN       3389.5e3
-CHK_RMAX       3389.5e6          
+CHK_RMIN       0.005
+CHK_RMAX       1e6
 CHK_EJECT      -1.0              ! ignore this check
 CHK_QMIN       -1.0              ! ignore this check
 !CHK_QMIN_COORD HELIO            ! commented out here
@@ -27,13 +24,10 @@ ENC_OUT        enc.merger.dat
 EXTRA_FORCE    no                ! no extra user-defined forces
 BIG_DISCARD    no                ! output all planets if anything discarded
 RHILL_PRESENT  yes               ! Hill's sphere radii in input file
-MTINY          1.0e-6
-FRAGMENTATION  yes
-MU2KG          1.0
-TU2S           1.0
-DU2M           1.0
-!MU2KG          1.98908e30
-!TU2S           3.1556925e7
-!DU2M           1.49598e11
+MTINY          1.0e-16
+FRAGMENTATION  no 
+MU2KG          1.98908e30
+TU2S           3.1556925e7
+DU2M           1.49598e11
 ENERGY         yes
 ROTATION       yes
diff --git a/examples/symba_energy_momentum/supercatastrophic_off_axis.in b/examples/symba_energy_momentum/supercatastrophic_off_axis.in
index 92ed6c564..a97b82237 100644
--- a/examples/symba_energy_momentum/supercatastrophic_off_axis.in
+++ b/examples/symba_energy_momentum/supercatastrophic_off_axis.in
@@ -9,10 +9,10 @@
 1.0 -4.20E-05 0.0
 0.00 6.28 0.0
 0.4 0.4 0.4 !Ip 
-0.0 0.0 0.0 !rot
+0.0 0.0 -6.0e4 !rot
 3 1e-08 0.0004
 3.25e-06
 1.0 4.20E-05 0.0
 1.00 -6.28 0.0
 0.4 0.4 0.4 !Ip 
-0.0 0.0 0.0 !rot
+0.0 0.0 1.0e5 !rot