diff --git a/calibre-plugin/__init__.py b/calibre-plugin/__init__.py
index cde5afc..7cabe48 100644
--- a/calibre-plugin/__init__.py
+++ b/calibre-plugin/__init__.py
@@ -25,7 +25,7 @@ class InterfacePluginDemo(InterfaceActionBase):
     description         = 'UI plugin to download FanFiction stories from various sites.'
     supported_platforms = ['windows', 'osx', 'linux']
     author              = 'Jim Miller'
-    version             = (1, 0, 2)
+    version             = (1, 0, 3)
     minimum_calibre_version = (0, 8, 30)
 
 #    action_menu_clone_qaction = True
diff --git a/calibre-plugin/config.py b/calibre-plugin/config.py
index bf34380..6b78640 100644
--- a/calibre-plugin/config.py
+++ b/calibre-plugin/config.py
@@ -34,6 +34,7 @@ prefs.defaults['urlsfromselected'] = True
 prefs.defaults['urlsfrompriority'] = SELECTED
 prefs.defaults['fileform'] = 'epub'
 prefs.defaults['collision'] = OVERWRITE
+prefs.defaults['deleteotherforms'] = False
 
 class ConfigWidget(QWidget):
 
@@ -105,6 +106,11 @@ class ConfigWidget(QWidget):
         horz.addWidget(self.urlsfrompriority)
         self.l.addLayout(horz)
 
+        self.deleteotherforms = QCheckBox('Delete other existing formats?',self)
+        self.deleteotherforms.setToolTip('Check this to automatically delete all other ebook formats when updating an existing book.\nHandy if you have both a Nook(epub) and Kindle(mobi), for example.')
+        self.deleteotherforms.setChecked(prefs['deleteotherforms'])
+        self.l.addWidget(self.deleteotherforms)
+        
         self.label = QLabel('personal.ini:')
         self.l.addWidget(self.label)
 
@@ -121,6 +127,7 @@ class ConfigWidget(QWidget):
         prefs['urlsfromclip'] = self.urlsfromclip.isChecked()
         prefs['urlsfromselected'] = self.urlsfromselected.isChecked()
         prefs['onlyoverwriteifnewer'] = self.onlyoverwriteifnewer.isChecked()
+        prefs['deleteotherforms'] = self.deleteotherforms.isChecked()
         
         ini = unicode(self.ini.toPlainText())
         if ini:
diff --git a/calibre-plugin/ffdl_plugin.py b/calibre-plugin/ffdl_plugin.py
index 9f29bd3..2570764 100644
--- a/calibre-plugin/ffdl_plugin.py
+++ b/calibre-plugin/ffdl_plugin.py
@@ -437,22 +437,12 @@ class FanFictionDownLoaderPlugin(InterfaceAction):
             db.add_format_with_hooks(book_id, fileform, tmp, index_is_id=True)
 
             # get all formats.
-            # fmts = set([x.lower() for x in db.formats(book_id, index_is_id=True).split(',')])
-            # for fmt in fmts:
-            #     if fmt != fileform:
-            #         print("f:"+fmt)
-            #         ## calling convert doesn't work here because we're in a BG thread.
-            #         # (jobs,changed,bad)=convert_single_ebook(self.gui,
-            #         #                      db,
-            #         #                      [book_id],
-            #         #                      auto_conversion=True,
-            #         #                      out_format=fmt)
-            #         # print("jobs:%s changed:%s bad:%s"%(jobs,changed,bad))
-            #         db.remove_format(book_id, fmt,index_is_id=True)#, notify=False
-
-            # for a in self.gui.iactions: # ['Convert Books']
-            #     print("a:%s"%a)
-
+            if prefs['deleteotherforms']:
+                fmts = set([x.lower() for x in db.formats(book_id, index_is_id=True).split(',')])
+                for fmt in fmts:
+                    if fmt != fileform:
+                        print("remove f:"+fmt)
+                        db.remove_format(book_id, fmt,index_is_id=True)#, notify=False
 
             if updatemeta or collision == CALIBREONLY:
                 db.set_metadata(book_id,mi)