Got any footage of your running? It's hard to give advice without seeing what it's doing. How's it take the bumps? Jumping around a lot, hitting the chassis a lot? How's the handling around the corners? When you brake are you still able to turn sufficiently? Hows it turn on power vs off power? Is this tight technical track the only track like this you run at, or will there be others that will need a different set up? Arw there any long straights where you need a tall gear to get ahead, or mostly short straights with jumps and mogals? For a base line you need to know everything about your rig to be competitive. So first thing, first. Swap out the shock fluid for a known fluid. 45 or 50 wt would be most recommended. It seems most of us are running the heavy DDM springs at all 4 corners, but that will be subjective for how it handles around the track. Stiffer springs wont soak up the bumps as nice as softer springs, but tuning via oil weight can get a good compromise. Hows your toe and camber settings? Are you running away bar(s)?