Been out of action for a couple of months, so now need to get wife's car back on the road. Have bought the new discs and pads, and am attempting the job. Have removed caliper, etc. and Torx headed retaining screw, but disc will not budge.........any tips ?? I don't want to beat the hell out of it with a hammer, and possibly cause damage elsewhere. I thought of using a puller held in place by 2 wheel studs, but the disc is of course not threaded. Of course all the online videos show it simply sliding off by hand.....lol.