The set is only a couple of years old and reverse on the locomotive has never worked. It runs in forward, it smokes (switch set to on), and the whistle works. When I hit the direction button on the transformer the locomotive stops and it seems as if all that happens is power is interrupted to the track. When I cycle through the transformer going on then off 2-3 times it will start going forward again. Reverse switch is set to on. Any suggestions? Thanks in advance.

Crafts & Hobbies - Lionel - New Haven Freight Train Set