What was found
DURING INSTALLATION OF NEW PISTON AND RINGS. IT WAS NOTED THAT ONE OF THE PISTONS WOULD ONLY SLIDE INTO THE BARREL HALF WAY. PISTON SKIRT OD WERE CHECKED, OK AT 5.1175 OD. THE PROBLEM WAS FOUND TO BE THE OD OF THE PISTON JUST BELOW THE PISTON PIN WAS MEASURED TO BE 5.1255 ON THE PISTON THAT DID NOT FIT, THIS IS MUCH LARGER THAN THE SAME OD OF PISTONS THAT DID FIT WHICH WAS MEASURED TO BE 5.1025.