ok here goes..got three drums off my 50 3100 chevy, but the last one (rear passenger) was stuck solid. not sure when it has been off. I backed-off on adjusters but still stuck. so then I got the bright idea to unhook brake line to wheel cylinder to relieve pressure, did that and still stuck. next I loosened bolts to wheel cylinder and while adjusting they came off and wheel cylinder slipped into drum and now shoes are wedged tight against drum. what can I do to get the drum off?