I am looking for a part for my big Midwestern cage. A few yrs ago we attached two cages using the super pet passage way connector.I am looking for the bubble plug which goes into this to block the passage way. The Ferret Depot says that it has been discontinued and so far the order I placed with The Ferret Store hasn't come in and is backordered. Can anyone help? Angie George [Posted in FML issue 4773]