what it basically means is that the motor is stuffed, and the potentiometer (used to provide feedback to the PGM to say what position your valves are in) is also stuffed.



If you're really desparate, get the person that said "the motor has bad commutation....." to pull the unit apart, specifically the motor and the pot. Make sure he remembers what wires goes where.

Go into a hobby store with the motor and ask for a replacement. I think it is a 180 sized motor for an RC car.

Take the pot to an electronics store, and ask them for a 0-5k ohm pot, show them what you have. Make sure that the pot that they give you can be turned both directions, and it doesn't hit end stops.

Get the person that said "the motor has bad commutation....." to put all the bits back together for you and you're done