Which car/class were you running in? Don't think I got a chance to meet you.
I don't have a pyrometer either, so I'm not sure exactly where they fall off. I'm sure some searching on sccaforums or PM'ing Chris will net an answer.
I'm running the A.I. event this Saturday and have some plans on how to manage it better. It involves increasing the rear sway just a hair stiffer and keeping the rears cool at all times and possibly increasing rear pressures. Probably will be cooling off the fronts after the second run as well. I also have a feeling that the very short intervals we had between runs contributed to the 3rd run problems as well.