Several motors later I'm getting pretty disgusted with this engine.  The museum has 5 of these engines and all of them are stripping their worm or main drive gear.  Lionel has a rubber pad between the motor and motor mount so assuming that is to align the worm to the main drive gear but it's obvious this doesn't work.  I've noticed the motor mount isn't flat so I took a file and filed it flat but this didn't work.  Any help would be appreciated.  Thanks.

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