I'm working on a 1966 Bally Wild Wheels and the score motor is making a grinding noise and struggles to turn. If I push the armature gear in with my finger it will catch and finish its revolution without the noise. I pulled the armature and the plastic gear looks rounded off. What is it supposed to look like and are these available? The parts list for the game lists a first gear, gear intermediate (double), gear and shaft, and rotor and shaft. Which is the armature?
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