My transmission brake is stuck. The usual fix of smacking it with a hammer to free it are not really working and the cable appears to be unresponsive. When I pull the lever it only ratchets at the very top of the lever travel. Pushing the lever back down has no results either. I've sprayed WD40 and PB Blaster around the drum but it seems to be stubbornly stuck. Any quick fixes come to mind? I have to drive it to the shop and won't want to smoke it completely.