I race a lot on carpet.
had a b4 and went for a x6 after building it with the big e off road setup !
i went to my local club to race and the car was dreadfull! rolling over on every bend, no steering ! so i started looking for carpet setups. tried 2 and they were still not right ether

understeer or rolling over all the time

i was sent a 3rd setup, think its 1 of mr e's which i copyed down to the last 1mm washer! as i run the ac shocks i did my own thing with limiters and oils!
i raced thurs eve and the car is well sorted

i can push as hard as i like it is rock steady and no understeer even on the fast sweepers! i was almost up with the 4wds and blew away all the b4s
so very happy with my x6