Hey, I dismantled my engine, cause I broke off a exhaust stud putting on a bi- turbo muffler. After getting it back from the machine shop I was putting it back together, and I did'nt know there was a little pin in between the edges of the rings. So I pushed the piston in to hard and the ring snapped in two pieces. It also scored my piston between the two rings.(not to bad). This is my question: Do I need to replace just the rings, or do I need to replace the whole piston? Fortunately it didn't mess up the inside of the jug. Just so you don't have to ask when I say it scored it that is kinda wrong it BIT into it. But only in between the two rings.