That may be a tall order. Several years ago I bought a Great Northern FM off Ebay and it arrived with broken side frames. I sent it in to Bachmann for repair service, got a call from the service department that they had no parts for the FMs but since they still had some FMs in stock he could offer a replacement but they had no Great Northerns. I requested that he swap shells and send me a replacement. Not a bad deal for the flat fee service charge.