One of my buddies and I installed my H&R SS springs this weekend (everything went relatively smoothly). When all was said and done and we were getting ready to throw away the box that the springs came in and sure enough we found something called a pinion snubber(came with the springs) in there that was suppose to be installed as well. My question is, is this something that I really need to install or something i can live without? (I don't really want have go through this whole process again for item that may not even be necessary).