Id say you dont know what your looking at. The only thing wrong with that piston and sleeve is it needs a repinch. If he hasnt cleaned the top of that piston, and thats the way it came out, is the reason that motor has run as long as it has. Arent you the one that has gone through a ton of motors and always had problems tuning them??????? Maybe if you knew what you were looking at youd have better luck......