The fix for sloppy cast iron pistons was a spring steel expander device that was installed in the wrist pin area with a special set of pliers. They're still available from some of the vintage parts suppliers on Ebay. They're specific for different engines, depending on the bore size.

www.ebay.com/itm/174391484763?

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!