Figured out the choke connection on Friday. Used one of those short brass servo "bushings", it was close enough to the ID of the choke arm. Picked up a 2-56/2-56 DuBro ball link, the 2-56 machine screw is a perfect fit in the bushing. A bit of locktite on the nut and cranked it down - not going anywhere. Did have to sand the ball link shorter to keep it from hitting the firewall. I'll run Goldenrod back to a 81MG (probably) to actuate the choke - still looking for a way to do that manually if possible - may try a bellcrank and turn it 90 degrees out.