Thanks Peter, I'll take a kicker ratchet set for the B50 shaft if you find a good set, I did notice the parts #'s are different from '69 441. The movement on short spline is lacking play with b44 ratchet set. I will email you. The illustration must have caused a few confused wrenchers over the years! LOL!
-Have a couple of 441 b25 hybrids to build this winter.
The B50 kickstart quadrant won't work on a B44/B25 because the inner timing cover is machined differently to accept the kickstart quadrant. You're better off just getting a B44/B25 main shaft and using your existing kickstart components.
The B44/B25 inner timing cover could be modified but I feel it is just not worth the time and effort.