XRAY - Model racing cars

Hi has anyone run the 2mm chassis with sorex28jb and sorex32jb on prima carpet and is it an improvement over standard 2.5mm chassis.
also what effect would i get using the new arms in the same conditions with 2.5mm chassis ie more or less grip.

thanks for your help

We run on Sorex 28JB on carpet and i've found the 2mm chassis gives improved overall grip, which is especially helpful in early rounds when there is a lack of grip or if its cold. Haven't run the new arms as none available in the UK yet, so cant comment.