Update:
Thanks to a fellow Forum member (who I shall not name, as I didn't ask permission to do so), the much needed valve gear parts arrived today. Now on to the questions/problems...
How exactly does one set the "timing" on the main crank?
That may be a moot point however, as I think I have discovered a real issue. It looks like the left side "valve rod" has seized up in the cylinder, and it is no longer connected to the "combination lever". Because of this, that "combo" lever cannot swing freely enough and is causing a bind. I tried to take a couple of photos:
These don't really show much; I just wanted to illustrate the "where" as much as the "what". You may notice I have disconnected the (according to Wikipedia) "union link" so that at least the rest of the gear can move...
Because the instruction sheets are so vague, I have no clue as to how to take this apart enough to try to fix it, and due to my ignorance about this kind of stuff, I think I may be "dead in the water" with this. 
Your thoughts are not only appreciated, but needed! 
Thank you.
Mark in Oregon
