Well, after much deliberation and research, I've decided that I'm either going to replace the engine in toto, or sell the bike. I really don't have the space to get into a complex mechanical rebuild.
I have a couple of calls to make tomorrow to see if an engine is available, and how much it would cost to install.
*sigh*
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http://foxytunes.com : NPR - NPR: 11-16-2008 Wait Wait... Don't Tell Me!
http://foxytunes.com/artist/npr/track/npr%3a+11-16-2008+wait+wait...+dont+tell+me!