We bought a Santa Fe Flyer HO Scale Train Set (Iyrm # 00647) for Christmas two years ago.  The speed controller (item #46605A) worked for a few months, and then the accessories connectors stopped powering the track.  I have two questions.  Short of another $40, where can I get a new one?  If the accessories connectors do not work, can I use the extra plug (which we lost) to still drive the train?