Damping to exitation of parasitic modes of

Well jollygreenaudiophile, I'm not sure if this is what you mean, but I've had great results with Soundcoat adhesive sheets. I have it stuck on all my electronic chassis's as well as on the top & bottom of the upper platform (which the TT sits on) of my rack. You can get it at parts connexion. Hope that helps.  

How well does it work? I'm looking to augment some Maple.

And thanks!

It works great on the 1/2" steel plate platform my TT sits on. It's now the best of both worlds, ridged & dampened. There was less of an improvement (though a good improvement nonetheless) with the electronic chassis's. It's pretty cheap, around $12 a square foot

forget everything except altering the Q - you will first need to determine the freq.s involved (tho any decent car stereo dampening material should be helpful)