Derek, Thanks again, good things to check. Everyone remember when I say it's fine at 100 to 110 I'm talking outside degrees not MPH, and then at 115 to 120 outside degrees is where the problem begins and I have to shut down the A/C and the problem then goes away, so what ever is the problem is very suttle as I am playing with the limits here for any car. I would love to see it stay in the middle under these circumstances however.....These cars are amazing. Kurt.G