Tractor supply (if you have one of those) has a nice pry bar package for about $17 or so that has 4 (if I recall) various size pry bars. I have had to really get super rough with old frozen drums before. I've broke this and that trying to get them off. one thing for sure, whatever you can unbolt or loosen from the backing plate will help. I have used 4 pound hammer, 9 pound hammer, etc. It can be like kingpins, pure heck to mess with....
