before Anyone flames...this is my opinion...
The Skunk 2 rear arm is a POS...looks pretty. I've had mine for about a year, and adjusting it was almost impossible...well the adjustment process is just retarded.
install, get baseline reading, remove wheel, remove bolt to hub, loosen nut, adjust, put back together, and get another baseline...if you are lucky, you only have to do this 2-3 times...which in shop talk is $$
Also, if you are lucky your bushings won't go bad. I've been trying to get in touch with Skunk2 for replacement bushings for a while (emails, phone calls, etc.) and nothing. Sure they've been around for a while and for the most part their products are good...but this just sucks.