Thanks for taking the time to answers guys. I tried using blocks of ebony, bubinga, and mahogany between the table's feet and the maple plinth. None sounded better than it does now after removing the brass protective discs and letting the cones stick in the wood directly. The maple is a very hard old Michigan maple with really small growth rings. SonofJim, please post your findings of the 5mm vs. 3mm Boston Mat after having chance to evaluate. Blueranger, thanks for the heads up on the Extreme Phono. I wasn't familiar with that product, looks like a good value. I agree about BB racks. As much as I like some aspects of my Billy Bags rack, it's no champ at vibration dampening.