Interesting comment on the staggered camber settings.
I have a meeting this weekend on a track with a 190 degree banked curve (14 degree angle) which is taken almost flat at around 55-60mph (backing of a fraction to get hooked up then back on full power).
The problem I've had in the past (and so has others) is splitting the tyre walls as the tyre moves across the wheel (rubber tyres). I am using a much firmer insert this time to prevent tyre movement but I think I might try this staggered camber set up.
All I need to do now is to rebuild the back end after yesterdays incident :
(a young kid turned on on the same frequency as another guy already running, his out of control car cross the track barrier right in to my line, I swerved but he caught my rear end with enough force to take the corner and rear diff right out of the car, that's right, the rear diff casing shattered).