Did you mess up the timing of the motor by chance? The angle of the
brushes makes a huge difference.

maybe? How's the motor run with no speed controller?


The brushes are sleeved and fit in only one way. About the only other 'unusual' possibility is that Eric has a Euro version - which has flat paper caps in the motor. They should be REMOVED and NOT REPLACED!

Peter WIeck
Melrose Park, PA