Could you put some brass heavy things on top of your preamp to help hold it down,i think Mapleshade sells some,i use a brass gear that i came off a press at work,not pretty but it works
preamp isolation
I have Symposium Rollerblocks with tungsten balls under my preamp. Yet, many of the thicker and stiffer IC's appear to be holding the component captive. I've added supports to my rack to help 'unweight' the pulling effect from the cables but I'm not sure how effective they are. Do the Rollerblocks still work properly with the cable resistance? Is there a better way? Thanks in advance.