I may have some parts for the zeniths collecting dust in one of my parts bins from yesteryear. I'll check. I can scan a chart of where all the jets go if you need it. Those are simple and beautiful carbs in my opinion. Many say they are pieces of junk and install Webers, but that is because they don't know how to set them up. There are three key points. Tighten the tiny spring in the starterdeckle, choke cover, set prethrottle gap correctly, and set high speed hot idle so connecting rod snaps in tension free. If you get these 3 items right, I guarantee you will be able to get into a cold car, touch the pedal once, fire the engine, and back out of the garage with an auto trans without the engine dieing. Good luck.

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