Ran engine to set idle, 1000 RPM. Pulled mixture to shut down, and adjusted the idle stop on the carb itself.
The shaft collar I ordered from McMaster Carr fits on the prop hub. I started on a pasteboard pattern for the bracket needed to hold the Hall Effect sensors. Ordered some 14 gauge Stainless Steel to fabricate it.
The aluminum spacers I bought to mount the coil pack are too long, new ones on order.