I had the same problem with 20-3563, a 2-8-0- PRR proto-3. The motor burned out in the same manner as yours. The engine was repaired by a certified tech under warranty. The problem he had was that the replacement motor was not identical to the damaged one. How he was able to mount it properly is a mystery to me, although the engine has performed admirably since the repair. Good luck with your repair.
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