I run it on a medium grip carpet. I do have airtronics servo going in it tomorrow before the race. LoL so, I should take the rear swaybar off since I don't have a front? I'm pretty sure without looking I have silver front and green rear? Is this backwards? Or ok? Don't have anyother springs at the moment. My issue now is loose rear into a corner. As in it wants to spin out every time. Exit is pretty good. Running 40w associated oil all around in the shocks. I figured the aluminum cvds would be a no go as everytime I bump a corner it bends a front. LoL think I will just tighten the front diff a bit more. Rear is pretty loose, but doesn't slip. I run a shorty lipo, mid position and I'm gonna try it rear position tomorrow.