Discussion about the Korg PolySix synthesizer

Greetings again!

It's been a year or longer, but I finally got around to purchasing 
another Polysix.

I'm interested in some mods for the thing, especially...

"there's a mod to open the rather dark sound, changing a few caps at 
filter/vca, a mod to make it louder w better S/N. and finally, a 
resistor replacement to make the envelope much faster."

I'm planning on shielding the effects board, but I haven't seen these 
mods mentioned elsewhere other than in this quote (which I am 
following up on with the person quoted).

It'd be great to "open up" the sound a little.  I'm also interested 
if there's a way to make the ATTACK of the VCA ADSR envelope snappy - 
leaving the rest of the envelope times alone.

Any input would be appreciated!

Thanks,
Rich