You're bouncing on your bumpstops. You have a very limited area of travel and by not cutting your bumpstops your travel is even less. So little that on the big bumps you actually bounce off of the bumpstops and that is what is so rough. Eibach's instructions even say to cut them. Just take a regular knife and cut them in half. You will gain about an inch of shock travel which should take care of half the bumps.