Bendix/Zenith Carburetor ahh hah
It would seem my 16P12 Bendix has an adjustable main jet hench the spring not shown on the break down pictures and parts list or rebuild kits. This adds to confusion but I'll figure it out. The picture is definitely getting clearer now. Glad the factory isn't to far away. Almost ready to do the happy dance but will have to wait until I get the kit hopefully this week.