I finished my changes to get back a bit more rigidity and was reprinting the parts last night.

However, one of my prints must have caught the print head early on, let loose, and I ended up with a ball of extruded filament instead of a part.  Thankfully the springy TPU filament I use on the connecting rods did it's job and lifted the head away from the other parts when this happened, so just the one got ruined.

Reprinting.

EDIT: Reprint of the most time consuming print almost done.

Six more smaller parts to print yet till I can try my new angle compromise.