alright, a while back the studs that the lug nuts sit on for my right front tire snapped, and were replaced. the guy did such a crappy job (and ripped me off too), and yesterday one of the studs got stripped on about the last half inch trying to get the lug off. I went and got 2 new studs (another one was kinda messed up too) and a new lug nut. I've been told to just hammer the old ones out, and hammer the new ones in. do I need to take off the rotor to do this? I have my car up on jack stands right now, and I was banging away at the studs, but they weren't budging and I'm afraid I may miss eventually and hit the rotor. should I just bang harder or what? also, it seems pretty hard to get in behind the rotor to bang the new ones in, so am I going to have to take it off? any help would be greatly appreciated, seeing as how my car is 2 feet in the air right now and I'd like it back on the ground some time soon