I recently purchased a used Lionel 6-11152 Legacy Lionmaster Challenger. Everything works correctly in the forward direction but in reverse it almost never chuffs (I get a few intermittent chuffs here and there). If I brake while in reverse there is no brake-squeal sound, and if I press the crewtalk button in reverse the engineer asks for clearance to depart instead of "how's the track look ahead." Would this be a bad "cherry switch," or could something else be wrong. If it is the cherry switch, how do I get to it?
Thanks for the help. John