Jeff, you might try Lexan first. There are some high-end companies that make isolation products who use Lexan as their material of choice.
If you can't find it nearby, I will cut you a couple of 1/2" shelves to try under your Supratek. I have plenty to spare.
If you can't find it nearby, I will cut you a couple of 1/2" shelves to try under your Supratek. I have plenty to spare.