Thanks for the info. I can see if it makes a difference. But having done a full track day on these with lots of hard braking and high temps, I'm pretty sure they are bedded in. I think that after 4-5 laps, my rotors can't handle the heat and start to warp. Because once they cool down they are good again for a number of laps before they start to shudder. That's the only thing that makes sense to me. The brakes have good bite and never fade even with the heat. Anyway, I think I'm going to do a brake upgrade anyway before next season, so I'm sure that will get me past it lol.