Well, this is the way I’ve managed to get rid of the alignment problems between the Base Plate, Swing Arm, Mast and Platen assemblies. A bit extreme, but it definitely gets rid of at least 3 separate intractable alignment issues.
What remains now are issues with the design and manufacture of the Faceting Head, Rack and Pinion, and Mast. At least now I can reliably and repeatably set an angle and index, change laps and come back to almost the exact position I need to be. Before, moving the Swing Arm meant that I’d have to use the Cheater to find the exact alignment again. Tedious and completely unnecessary with an effective design and execution.