After my MTH RK 0-8-0 switcher took a dive off the table and landing on it's motor, (shell was off at the time) I found the motor mount was bent. I ordered a new motor mount and to be on the safe side a new motor, from MTH. The flywheel on the new motor is half as thick as the original motor and pre painted for a flywheel sensor.
Will the lighter weight of the thinner flywheel affect the performance of the switcher? It has an ERR Cruise board in it.