Tried hammering them off, that's what I've done in the past and it usually worked. So mine would not have self adjusters...so they should turn if I pry them with a flatblade screwdriver, right? Seems like they are stuck or something. Drums being riveted to the hub?? Mine looks to be this way, there's three rivets, or something, on the drum. Does this mean the only way to get them off is to grind them off and drill them out??