I learned this weekend that I have been running my tires too low. I actually brought a (non-contact) pyrometer out and the center of the tire was cold compared to the outside and inside. Took it up from 30psi to 32psi and the tire and car were much better. I also figured out that small adjustments to the shocks can mean a big deal. Matt had complained the car was a little pushy, so I took 1/4 turn out of the rear and all of a sudden it was great for both of us. Both of us dropped almost half a second just by getting that extra front bite on turn-in from a 1/4 turn adjustment.
On the other hand, "a little pushy" means it's no longer the drift machine it was at the Dixie and ZMax tours