I owned a SOTA Sapphire from the early 80’s, purchased new from the factory when it was still in downtown Oakland, CA by the Coliseum. Nothing short of nuclear testing in the room would cause an audible issue. That is a fabulous table. I can’t speak for the current version, but I’d experiment with what you’ve got. I wouldn’t be surprised to find that adding additional isolations does not help.
good luck and remember to just enjoy the music.