Warped rotors?

[jimgl3_imp]

problem is it's broken off down inside the threaded aluminum hole. so all my attempts to make a flattish surface resulted in gnarling up the aluminum threads. I know they want wheels and such to be light weight, but putting steel bolts in aluminum is just not good mojo. I once ended up using JB Weld to weld a motor mount up solid on GSXR 750 race bike because the frame slider bolt went into the engine case! If I had realized that I would have never put the frame slider in the first place. turns out frame sliders are not good for racing anyway. they hit curbing and launch your bike into the air. fiberglass race fairings are much better without frame sliders. they are tough and when they do crack you just drill and zip tie and go back out on the track. it's funny, the only progress I made at all, about a quarter turn, was from super gluing the broken off bolt and trying to turn it real easy. it did about a 1/4 turn then broke off the glue.
interestingly enough, after that, it would not stay glued at all.