I did not run those tyres!
Those are for our indoor series and we run them like slicks with additives on them. I tested with holeshots and wide 4 ribbed losi tyres.
I am currently designing a new transmission. It will be in aluminium and it will be reversible. Not mid or rear, but left or right hand. The guys who run the X-6 indoors here have put in the old 3 gear transmission and it works out great for them. So Mine will have both options in the same case. Expensive, I know but this is fun