Did you put in a smaller bump stop, did you notch? I hear that you don't need to notch on a 4" drop, but I'm sure you need to swap out the bump stop for a smaller one. I went straight to a 7" drop in the rear of my 99, so I notched right away.I installed a lowering kit in the rear of my truck. its a 99 silverado. I installed lowering shackles and hangers but now it bounces a lot from the rear. What can be causing this or what can i do to make it ride better thanks.