Have you guys played with castor on the 1 1/8" chassis? I know the weight transfer is slowed down on the thinner wall tubing naturally so would not running less caster transfer that weight faster to help the kart handle or even create some bite. I am on 9LF 12RF at 375. 60L 46.5N 68X. I was thinking about trying 7RF and 10LF to see how if felt. I know it changes my camber as well and I've considered that. I run diff tracks and was thinking about playing with caster to see if I can find another tenth or so. I know most guys say leave it alone and work on tires. Yes, I know tires are the key...however I found out this weekend at the Big O that more are using that tuning mechanism that most think. I run all grip level tracks but I'm not sure there are any really "high bite" tracks I run.