So I recently got new rotors and pads for the car, and it's obviously not a very hard job. I got the fronts done no problem, and on my driver's rear side, the rotor mounting screw was stripped to ****, and it sucks because that was the whole reason I was changing the brakes (the mechanic when I first got the car duffed it with rotor replacement ["you need this to pass inspection"] and maladjusted the parking brake and didn't even replace the pads. another rant). Anyways, I tried basically everything in the book to get it out. Drilling it, using a chisel to try and get it, a ton and a half of wd-40 and liquid wrench. Is there anything else I can do?