i too, as some of you have, used nitro tires on carpet. i also at the time thought my car was close to being dialed. after tinkering w/ my set-up for a month, i gave in and got some dblpnk, dpo.
HUGE difference. the few kinks i was trying to work out w/ my nitro tires were solved w/ the proper tires for carpet!
no offense to anyone here, but most of you probably dont win your club races. i dont either. its not just coincidence that at snowbird and cleveland or any other indoor carpet race for that matter, you will find that 99% of all people who finish on the podium, run the proper equipment.