diff --git a/virtaccl/site/SNS_IDmp/va_config.json b/virtaccl/site/SNS_IDmp/va_config.json
index 8ca3081..ebfeb50 100644
--- a/virtaccl/site/SNS_IDmp/va_config.json
+++ b/virtaccl/site/SNS_IDmp/va_config.json
@@ -15,7 +15,7 @@
         "IDmp_Mag:DCH01": {
             "PyORBIT_Name": "HCorrector1",
             "Power_Supply": "IDmp_Mag:PS_DCH01",
-            "Polarity": 1
+            "Polarity": -1
         },
         "IDmp_Mag:DCV01": {
             "PyORBIT_Name": "VCorrector1",
@@ -25,7 +25,7 @@
         "IDmp_Mag:DCH02": {
             "PyORBIT_Name": "HCorrector2",
             "Power_Supply": "IDmp_Mag:PS_DCH02",
-            "Polarity": 1
+            "Polarity": -1
         },
         "IDmp_Mag:DCV02": {
             "PyORBIT_Name": "VCorrector2",
diff --git a/virtaccl/site/SNS_Linac/virtual_SNS_linac.py b/virtaccl/site/SNS_Linac/virtual_SNS_linac.py
index e85860a..5511e07 100644
--- a/virtaccl/site/SNS_Linac/virtual_SNS_linac.py
+++ b/virtaccl/site/SNS_Linac/virtual_SNS_linac.py
@@ -54,7 +54,6 @@ def build_sns(**kwargs):
 
     debug = kwargs['debug']
     save_bunch = kwargs['save_bunch']
-    physics_nodes = kwargs['physics_nodes']
 
     config_file = Path(kwargs['config_file'])
     with open(config_file, "r") as json_file:
diff --git a/virtaccl/virtual_accelerator.py b/virtaccl/virtual_accelerator.py
index c981377..c616019 100644
--- a/virtaccl/virtual_accelerator.py
+++ b/virtaccl/virtual_accelerator.py
@@ -163,7 +163,6 @@ def __init__(self, model: ModelType, beam_line: BeamLine, server: ServerType, **
                 print(key)
             sys.exit()
 
-        self.debug = kwargs['debug']
         self.sync_time = kwargs['sync_time']
         self.update_period = 1 / kwargs['refresh_rate']
 
@@ -175,7 +174,7 @@ def __init__(self, model: ModelType, beam_line: BeamLine, server: ServerType, **
         server.add_parameters(sever_parameters)
         beam_line.reset_devices()
 
-        if self.debug:
+        if kwargs['debug']:
             print(server)
 
         self.track()