What happens to the riveted connection for the sending unit wire. Seems it would melt the isolator when soldering/brazing on to it.
The 3/8 feed 1/4 return units are available already made. Just their resistance scale of the fuel level is not very linear.
hey, I've got an 850DP that would be perfect for this motor. I agree with bumping the initial timing up. That motor should like more than 18. Have you pulled the carb to see how much of the slots are exposed on both the pri and sec?