Requesting forward or reverse you can hear the motors trying like a humm getting louder and then fw and rev contactors spark like lightning, machine surges, and then nothing. reset key, try again, repeat. both contactors are new, control card is new. I can disconnect the cable that goes from the current sensor to the right drive motor and it won't spark , but won't move either. does this sound like a bad Right drive motor?

it will creep fine but as soon as you start to max the handle out in travel it surges and trips.