I rebuilt a Carter YF about 4 years / 10,000 miles ago with a proper kit from Jon/carbking/The Carburetor Shop. It was easy to do and has been working perfectly ever since on E-10 fuel exclusively.
Unless you know for a fact that all the parts on your carburetor are correct for your engine, you might be trying to rebuilkd a Frankencarb with incorrect metering rod, etc.
I originally had a YF with 1950s and 1960s Willys parts that was not correct for the Chevrolet 216.
Once I got that situation resolved, rebuilding it with CORRECT parts from The Carburetor Shop, it has performed flawlessly.
Post all the numbers on the bowl, base, etc. here so that Jon/carbking can determine whether or not you actually have a YF that's designed for a 235.
What kind of problems are you experiencing?
