What is the angle of the lower control arm? It sounds like the springs you have are either too soft or the free height is to short. Are you sure they are the right ones for the control arms you are using. This is one of the pit falls to piecing together a system, sometimes all the advertised numbers don't add up. If SC&C recommended springs, give them a call. Some others on here might correct me, but I like to start from the lower control arm. The line between the center point of rotation in the lower ball joint and the center point of rotation on the inner chassis mount should be level. This gives you very predictable movement in compression and rebound. Then start measuring pieces from there to see where the issue is. Another thing to look at is the shock wipe. Where are you in the shock travel as it is. If it's mostly compressed or the opposite it can tell you something as well. I can't tell you specifically what is wrong because I don't have any experience with these cars, but I'm sure someone will chime in shortly. Good Luck.
