Reply Tbg:
Thank you my friend, as you said I would definitely proceed slowly, 1 piece is more than enough to try, the thing is for me- the best improvements are typically room treatments or new equipment. Most tweaks (for me) are such an insignificant improvement that I dont spend money on them; I would rather spend the cash on a CD, SACD or DVD.
But some of our fellow members enjoy tweaking, so for those that do I think this is one worth looking at and I support there attempt at this tweak as opposed to some of the snake oils out there (like polished river rock stones)