I made up a set of 35shore foams for my b4,what a differance.first two heats were a bit dodgy but once they were bedded in there was no stopping me.

We changed to foams cus the pins were making carpet slippy for the touring cars.
I was all over the back of a 4wd with a 6.5 motor in(i run 10.5)
Anyone thinking of trying foams,do it,wicked grip and cheaper.
If you want to try a set then come to marstons model car club on friday nights where we have a couple of club sets for you to try.
Gona try them on the ramps this week.