check the sportwerks site for setup sheets......or see what other guys at your track are setting up like (any buggy) and try to copy their setup to try it....so many adjustments on a buggy to try too.......I run 30 wt shock oil when my track is just tore up so it soaks up th ebumps.....I'd try more rear squat and raise th efront alil via the shock positioning......play w/ shock preloading too....try a lil more pre-load in rear than front....
setup is definately a prefference but you need to try a lot of junk setups before finding one you like