Since I asked the question and started this post and am very gratefull for all the responces that have been posted, it is a wealth of information
Anyways I thought I would share that I bought I think 6 motors that were taken out of MTH trains and they all have worn gears on them and another 4 that are still installed in diesel frames, that have the motors and the trucks attached but no boards, so if anyone is in dire need of a motor with a worm gear already on it , let me know and I'll see if I can't help you out.