Thanks, and yes it was the stock AE spur gear.

I just pulled that spur gear, I spent at least 20 minutes trying to get it to mesh correctly again. The fix to keep that from happening in the future is just to locktite the motor screws? Also, when setting mesh, I just eye it all the way around. I normally do 2 to 3 rotations of the spur just to be on the safe side. I heard that the old paper mesh is still good, is that true?