Dear Halcro: That " circular aluminum frame " you are talking remember me what I did it with my Denons: instead that " circular aluminum frame where drop the Victor " my frames were from natural marble that was seated on the AT pneumatic footers and the Denons goes freely supported by three tiny tiptoes like ( I tested metal and non-metal materials here. ) that goes under the Denon/Victor circular metal top frame ( where comes the the TT controls/switchs.
This is a very tiny/thin surface for the tiptoes can stay in equilibrum but is more easy this set up that what we can think.
I still have those beautiful frames and maybe in the near future ( waiting for my Victor. ) I could try it again and see what happen.
Btw, those frames work as a giant/heavy/non-resonant( 40kg. ) arm board.
Well, something a little different but I remember it works very good too.
regards and enjoy the music,
R.