After a few minutes of tinkering, I got Salty to kick over easier, rev a bit cleaner, and eventually idle fairly smoothly. Here is me tinkering:
And proof it runs! I'm thinking of renaming him Smokey, as he tends to smoke a little. Probably a bit of blow by the freshly honed cylinder and new rings. And I think I squirted quite a bit of magic oil in the cylinder last year so as not to turn it over dry.
I still need to build a shift lever and adjust the auto-clutch before I can see if it motivates down the road under its own power. But at least it manages to run and idle better.