Alvin, if the pistons are too sloppy once they're honed, send the whole works to me- - - - -I can make close-fitting pistons, and the cups will expand enough to be leak-free even in an oversized cylinder. I've got plenty of aluminum round stock in several sizes. Another option is to bore the cylinders out and install a stainless steel sleeve, then grind the sleeve to a correct fit.
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!