i'm in the process of changing my head gasket and can't get my timing belt off. i need to get the bolt on the end of the crank loose, to take the drive belt pulley off, to then take the plastic timing belt cover off, and i can't get the bolt to break loose. is it reverse threaded or something? anyone out there had a hard time with this and/or have any advice or tricks to the process? i don't have access to a lift of any kind so putting much torque on the bolt is extremely hard. any help would be appreciated.