I was running myMTH #20-2567-1 GN A-B-A set of FT GN diesels when all of a sudden the train stopped and there was quite a bit of wheel slippage and the train would not move. Apparently what happened is the trailing powered "A" unit changed direction abruptly and went into reverse. I could not get the units to work together. Took off the trailing "A" unit and the lead unit was able to operate in the regular fashion...forward-reverse, etc. Any ideas as to what happened to the other "A" unit?? I have never had this happen before. What's going to be the fix??
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