The "high tech" way, which was posted on this board some time ago, is to get a swedge cutter tool. This is a tool resembling a heavy duty holesaw. You put the cutter over the stud, and it removes the "swedge" on the front.
This is the correct way to do it, although it is more old school than "high tech". I had to find an old shop in town that had the tool and they let me do it right there. They hadn't used the tool in years!
All the beating in the world is not going to separate a drum that is swedged to the hub.
