track in located in the high desert ( Wheel2Wheel Raceway, Victorville CA). I'd call in more of a sandy clay than anything. It's set up for speedway bikes and stay tacky/wet all night. My driver is 80lbs and the kart enters well, but seems to come off the corners loose, like it lacks forward bite, grip or side bite in the RR. It seems lazy in transfering the LS to the RS, or doesn't at all. Seat is mounted hight and toward the engine best I can. Cross is anywhere between 52-57%, left side is 53% and nose is 47%. We are running a Duro treaded tire, punches around 50-60 depending on the temp/sun. No prep allowed. you can youtube it for an idea of conditions, size,etc..
I agree, I would typically hesitate to go to a newer chassis, but think there are few options that are soft enough. Alot of guys run the older, mid steel chassis or euro that flexes more, but personally I want something I can run all over the west coast and be competitive as well.