Needing some help with an 12v electric wiper motor. More specifically the t-bar on the motor shaft that the wiper transmission arms attach to. I've broken the end of an allen wrench in the set screw in the smaller of the two holes and can't get it out. I'm trying to have it machined out now. I've broken numerous bits trying to get it out. Is there a place where I can purchase a new t-bar. I've searched the net and all the wiper manufacturers with no luck. I purchased the motor from lmc. This happened while replacing the transmission arms. Don't want to buy a new motor. Help