I'm sure you guys have answered these questions a hundred times but hopefully someone can give me a quick answer!!! 1) Can you run or change the pinion gear in the MO3 chasis...higher than the 20tooth that comes in the kit? 2) I put a extra shim (1.5 mm I think) in the front friction damper....lowered the ride height to where it looks OK....is there more I can do without going to the oil filled shocks??? Any help would be great!!!