Calling all Zenith Experts.
 

So in my quest to produce the ultimate, High-performance set of Zeniths. I;ve encountered one mystery (among many) that has caught me off guard. There is a tiny little brass jet(?) with no numbers on it, in the the float bowl of each carb. Does this supply the aux. Enrichment curcuit and if so, can I just fill it in with a little JB weld? If I'm not mistaken, I should just block it off.
Thanks,
Nabil

Do you have a picture of this jet? There is a funny small one from memory that could be for the aux enrichment. Why not just remove all the lines, tap the 3 inlets under the butterfly's (M4) and the main outlet to the enrichment diaphragm (m5) and then screw in the adjuster screw all the way?

Thats the path that I have chosen....I'll report how she runs shortly.
Thanks,
N