Thanks for the responce guys. I think the spring rates are in the ball park. We tried adding a round and half of wedge to the rear struts. It made the rear so loose we had trouble keeping the car on the track. The rear wanted to step out on every corner. Backed it off to 1/4 round, and the car settled down nicely. I will start with an alignment changed based in tire temps and wear patterns. There was a 60 degree difference accross the face of the front tires and the inside grove showed much more wear than the outside grove. This indicates that I was running too much negative camber. More contact patch should mean more grip, and better cornering. I'll take a couple of degrees of camber out and see what happens at Road Atlanta in July.

Chuck