I have a 20 year or so old N&W J Class locomotive. Recently my my loco began to slow down and began to smoke (not  installed) and stopped moving. I narrowed it down to the motor. I called and found Bachmann no longer carries parts for stuff that old. Been watching Ebay but so far no luck. Also my loco has the tendency to wobble caused by the front drive axle. Does any one else have the same problem? Anyone have any other ideas? Thanks JimmyO