I'd agree with Sam that some had great success with the Carter N, even after the introduction of the KA7A. The key was to have a good Carter (and many were not) and to use the fuel conversion kit fuel pump. Eliminate the pressure system...

One of the best at making Carters work well, was Ron Thomas, perrenial BU hot dog and outstanding 20H motor builder.

I ran both KA7A and Carter N from time to time, but I hated having to reset the float constantly in the Carter. We were not allowed, then, to reinforce that float tab, and the pounding of a BU would bend it.

Jerry