The periphery clamp makes me nervous. What if it slps or something? I have done lots of mods on AR tables and I think the most effective is the damped inner platter and delrin bearing with a new shaft. Using hot glue to fill the suspension dampens it pretty good and that sticky dampening sheet they use on autos seems to work on the platter. Another thing I tried is the leaded tape used for taping golf club heads placed around the interface between the inner and outer platters. I have always thought rightly or wrongly that making the platter really heavy is bad for the bearing. Nice to know that these things are still avialable, a fully modded AR sounds nice.