Chainsaw Repair

I have a saw that the piston looks brand new with all the machining marks on the exhaust side. To look down the boot it looks smooth on the intake side.

I got ready to put rings in it.

When I pulled the cylinder off, sure enough, the intake side was smooth as a baby's butt but there were no machining marks left. I decided to put a piston in it also for a long term repair. Nothing like leaking around the intake port and spitting back through the carburetor.