Based on my experiences I would say that with the rollerblocks you get more air around instruments but you loose LF impact. It is most likely that you are hearing artifacts that are less dis-pleasing than without the rollerblocks. A safer, and maybe better in this case, experiment is to try Stillpoints.
Why don't you just sell the VPI and buy a table with a properly designed suspension? Or, buy a better non-suspended table.
Why don't you just sell the VPI and buy a table with a properly designed suspension? Or, buy a better non-suspended table.