I tested the raceberry yesterday on low grip asphalt and could feel straight away that the bottom deck was too stiff - big push on the way into the corner and not enough grip coming out. The car changed direction very well thanks to the more centralised weight but it just didn't have the traction. As I mentioned in my build review, the standard raceberry chassis is much stiffer than the kit v5 so I'll be putting the soft raceberry on & save the standard chassis for carpet and large nitro tracks