unit cranks but will not start, was working fine. I followed trouble-shooting guide on unit and even swapped controller, actuator and relay from a working unit, still no start. Seems like internal magnet cant overcome external magnet on actuator. I even ran jumper wires from J & H terminals on controller straight to actuator plug and it still wont disengage arm. Anyone familiar with this unit and this problem? Any help will be greatly appreciated.