My buddy and I from work go down to SYKART just at the 405/5 interchange south every wednesday night after work. Usually pretty empty and we work on good driving practices. Nice to be in karts in what amounts to a TT race.
The track is nicely balanced, the cars are pretty well balanced and it REALLY rewards good lines and good driving, and REALLY punishes you for bad habits.
.... what kind of lap times are you seeing at SyKart? I dip into the 35's when the stars and moon align but some of the S2000 gang I go with are regularly in the 35's and one guy is in the 34's every time (freak!)
These folks go the 3rd Thursday of every month and the more the merrier http://www.s2ki.com/forums/index.php?act=ST&f=36&t=420073
the only thing that sucks is getting your a$$ kicked by a girl (she's fast, and good looking )