When I crank the engine when the battery voltage is low, the starter engages with the fly wheel, does not disengage and the engine does not start. When I am trying to start the engine I can turn the ignition key to the aux position and run position and the starter continues to crank the engine. I need to disconnect the battery to disengage the starter. The distributor has a Petronix conversion. The starter is of original style. Will this problem go away with a fully charged battery or does something need to be replaced?