DH is working on the 830 Record he got with a bad motor. He's messing with it and discovered the problem is a fried capacitor that sits right under the motor. He determined that it is there to provide constant power to the light (so it does not change with the speed) and also the speed control lever. So if you are having problems with uncontrolled speed, it could be that capacitor, and nothing to do with the foot pedal.