Just wanted to let you know how it went last weekend. I get the carb retuned on Friday and it ran flawlessly. AndyT, I used your setup as a baseline and it was really close. I actualy had to richen both the low and high end needles about 1/4 turn each. I even had to adjust the mid range adjustment a little as it was opening up the HSN too soon and making the car jump fowards.
The original problem was with the fuel. I had switched to Trinity/HPI fuel MFG by wildcat. I though everything was working great. Once the air temp got too high I just couldn't keep the motor running cool enough. Then I finally wised up and switched back to Odonnels (the oil residue is really nasty). Thats when I started to have the idle problem, but the motor ran fine. I guess I had just richened it up so much that it was way out of tune.
Ran in a 2 day race over the weekend, and it ran at 240 to 260 without a hitch. Now I just need to learn to driver better.