Me too. Slipped a piston in the cylinder and then proceded to turn the piston around inside the cylinder to line up the connecting rod with the crank. The ring went past the boost port on the side of the engine and the ends of the ring opened up in the port. [:@]

One scratched cylinder, busted ring and dented piston later I had myslef a nice paperweight. [sm=lol.gif]

Lesson learned. Line the piston/rod up BEFORE you slip it into the cylinder because you don't want to turn/twist it to line up the rod with the crank pin AFTER the piston is inside the cylinder.