diff --git a/interface/ri_data.py b/interface/ri_data.py
index 6719b85..aa96438 100644
--- a/interface/ri_data.py
+++ b/interface/ri_data.py
@@ -300,9 +300,9 @@ p_node - xml node (parent node) '''
         ''' calculate raid device size '''
         rd = Raid.dict[dev]
         sz = min([ float(Partition.dict[d].size) for d in rd.active_components])
-        if rd.level == '0': return sz*len(rd.active_components)
-        elif rd.level == '1': return sz*len(rd.active_components)/2
-        elif rd.level == '5': return sz*(len(rd.active_components)-1)
+        if rd.level == '0': return str(sz*len(rd.active_components))
+        elif rd.level == '1': return str(sz*len(rd.active_components)/2)
+        elif rd.level == '5': return str(sz*(len(rd.active_components)-1))
 
     @staticmethod
     def get_next_device():
diff --git a/interface/ri_tk.py b/interface/ri_tk.py
index 5849248..3c71334 100644
--- a/interface/ri_tk.py
+++ b/interface/ri_tk.py
@@ -159,10 +159,14 @@ def process_action_quit(w):
     if 'action' in dir(w) and 'quit' in w.action.dict:
         getattr(sys.modules['ri_cmd'], w.action.dict['quit'])()
 
+    if 'variables' in dir(w):
+        for v_n, v_t, v_v in w.variables:
+            del var_dict[v_n]
+
     if 'widgets' in dir(w):
         for sub_w in w.widgets:
             process_action_quit(sub_w)
-
+    
 def destroy_widget(w):
     ''' w - Widget instance '''
     process_action_quit(w)
diff --git a/interface/ri_tk_cmd.py b/interface/ri_tk_cmd.py
index 15f982e..30d59b2 100644
--- a/interface/ri_tk_cmd.py
+++ b/interface/ri_tk_cmd.py
@@ -76,7 +76,7 @@ def mp_top_ok():
                 # if format, use the filesystem just set
                 idx2  = int(idxs2[0])
                 fs    = eval(display.var_dict['mp_top_fs'].get())[idx2]
-            elif fm == 'no' and dev in ri_data.Partition.dict.keys():
+            elif dev in ri_data.Partition.dict.keys():
                 # else use the filesystem in Partition
                 fs = ri_data.Partition.dict[dev].filesystem
             else: