Just a sidenote about your rotors. If you do have them turned you'll see the extent of the damage. As the lathe cuts get deeper take note of the surface: If the heat has gotten really deep the "cutting bits" will literally vibrate and make a strange pattern in the "hot spot areas". If you see that don't bother any further cutting. Also have them cut at the slowest lateral speed (lathe movement right to left) for the finest cut you can get.