Anyway to make the driver clutch engage at a lower RPM? Weaker springs? My "Jimmy Gote" seems to need more RPM to engage than I would like. Seems to have plenty of power to handle it. Any ideas? Mine is an Ebay Chinese series 30 clone. I checked my center to center spacing and I might be 1/8 to a 1/4 wider than it called for. That do it?