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It probably just needs new brushes. Cheap and easy to replace. Wiggle the wires right at the base where they enter into the top of the unit. If that affects output it is most likely the brushes.
http://www.summitracing.com/parts/MAA-3146/
Last edited by Curt C.; 12-30-2009 at 04:50 PM..
Reason: Adding information
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