Today I worked on the lower attachment for the chain tensioning rod.
I've abandoned the spring loaded adjustment for a rigid approach, it was fun and IMO looked kind of cool but, as my expert sources have suggested, "It ain't gonna work".
I've decided to put an adjustable rod on both sides of the bike now which will help sturdy things up and provide some additional motor shaft alignment adjustment.
I think some 1/2" conduit will become the support rod, while a 1/4" bolt in-line with the rod will provide adjustment at the lower end.
If this setup works I'll make another for the other side.
Man, at this rate, I'll have this project completed in about 6 years ... :)