Recently did a self install with Eibach Sportline Kit. I had the usual problems but got it done in about 5 hours by myself. It is smooth over any rise in the road but any dips more than 2" or so the front end slams really hard. I did not cut the bumpstops since they were much shorter than the ones in the instruction sheet. If I push down on the front end it doesn't go down at all. Everything is tightened to spec so the problem is not in that area. I've read about this problem before but there seems to be more suggestions than solutions. Please respond if you can help out. If I trim stops to the directions they would only be about 1 1/2" in height.