Well, I tore it down yesterday
Unfortunately, it has big problems. The cylinder has been worn completely smooth. You can see the line where the piston stops, the crosshatching is still visible below it.
The rest of the cylinder looks like this
Onto the piston, which had had the coating worn off of it; I am assuming that this is how the piston began to eat the cylinder.
Last, the head. As you can see, the exhaust valve is warped, and does not seal when liquid (Super Clean, in this case) is poured into the chamber.
So, I need an entire top end. What do you guys recommend?