I can probably use that extra piston- - - -I've got a set of triple beam scales and a lathe for weight matching. I match weights down to a 1/10 G. tolerance on pistons and rods. Find the lightest weight item and whittle the rest down. Drop me a pm with a price including shipping, and let's do some business!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!