Not knocking your solution at all, not a bit. I just found that the route I took was all that was needed to solve the problem in my situation. There are all sorts of problems one can face starting with things as simple as shelving moving in the horizontal plane, ie. dipping forward.Bump stops had nothing to do with my problem. I do agree though that tuning the suspension to around 1-2 Hz is the right thing to do. The advantage to my engineered solution is that it will work with ALL turntables, whether suspended or not.