"Carter YF has a better designed float which is less likely to contact the the side of the bowl and hang up, allowing fuel to overflow."
If this is correct, the engineers at Rochester knew they had a problematic float/bowl design from 1950 to 1967 and didn't come up with a solution. My first assumptions are usually wrong so let me self correct and say the engineers did come up with a solution but for some reason they were not implemented or didn't work properly or was too expensive and the problem continues on even to today. If that is true then it just supports the general forum opinion to go with the Carter YF.
"If fuel leaks out of the top of the bowl on a curve or from hitting a pothole, then it is likely set too high."
This is the point I have trouble understanding. If I simulate a warped air horn by drilling a 1/64" hole, in the air horn, just above the fuel bowl, and the float setting is perfect (including allowances for type of fuel and needle valve construction), gas will not leak out the hole? Pot hole, curve or parked on a hill it will not leak?
