I am by no means an expert on the car, mid pack at club level racing, but what I have found works ok for carpet is using the medium front springs from the 12m (or as close as you can find to a 1mm wire diameter with about 4 coils) with a tiny bit of preload on them, 1/2 turn past contact or so. the up stops I have set to bottom when the chassis bottoms out (zero ride height), the down stops are set to about 1/2 degree camber for the tires or whatever you need for even tire wear. take out the center screw on the back of the tbar, it will save the pod plate and spacer in a crash. I have been running the associated tbar (.075") and pivotballs, with a .030 spacer under the front pivot. its cheaper and more durable. corally light (red) tube lube, silver spring with 30 wt oil (Associated), down travel is zero limited by the shock length. tires so far are purple front dbl pink rear on low to medium bite with a stock or 19t. the front knuckles I havent had trouble with so far, try a wide bumper, crc makes one. there is also a listing for non ball bearing front knuckles, not sure if they will fit or not as I havent tried them

scott