What tyres are being used by you boys in USA?
We running American racer sd57 USLC series tyres.
We find on a clay track, we running lower pressures, most guys start off,
FL FR
8 8
RL RR
6 8
Usually dropping a pound all round for second heat then another pound all round for feature.
I run the same setup thats detailed in that link and apart from tightening the car up a few turns on the left rear, the car is a dream to drive with limited experience.