You can look up some of my posts to see responses about this topic, but basically, TW suggests a 1 inch thick slate for the table to rest on. I replaced the stock feet (mine didn't come with stillpoints - which yours probably do) with a Sistrum SP-1 stand, which used to rest on slate.
I have now gone to a very expensive active isolation platform, but SRS makes a specific platform for the table.
I have now gone to a very expensive active isolation platform, but SRS makes a specific platform for the table.