The shaft clamp (backside) on my mega live has shattered. I have a 60" ultrex and it can scrap on the front of the mount when it comes up or maybe I tightened it down to much. Anyone know where to get a replacement or have an extra from a replacement unit they would like to sell? I might just end up making something out of metal but wanted to see if anyone knew of any options before I put in that time. Thanks