On my way to work this morning. Pulled it apart on my lunch break, found piston missing a chunk from one corner, broken lower ring, and a small chunk from the bottom of one of the intake ports.
I can't afford the whole setup from the Honda dealer this weekend (around $200), so I hope to polish up the jagged edges on the intake port and just replace the piston and rings (about $50). Parts should be here Tuesday. I will keep you posted on whether this works.
In the meantime, I'm on the hunt for a new top end, possibly a larger bore if I can find it. This is an '87 Honda Elite 50s. Any suggestions or advice would be greatly appreciated...