Prothane coil inserts They compress to like 60% of their size. They are progressive stops. When I was reading about them someone said they are like landing on a cloud of titties. Thats all I needed to hear to try them. I picked up a rod of 1.25 plastic to put inside them for a solid stop if they ever stuff enough to damage stuff. If you get some I still have a couple feet of that plastic rod I could cut you a couple pieces.
http://www.amazon.com/Prothane-19-17.../dp/B00387A83G