Interesting analogy on the number of times rebuilt, cannot say I have ever seen that analogy before.
If shiny / new is your goal, there are a number of import carburetors currently available that are advertised for the 235. Sometimes they work, sometimes they don't, never really well.
WHY has your carburetor been rebuilt so many times ? 1/2 a million miles on the carburetor? Once done by a commercial rebuilder with mismatched parts ? Rebuilt with a typical FLAPS "rebuilding kit" with incorrect parts ?
Opinion - THERE IS NO BETTER CARBURETOR FOR YOUR 235 THAN A PROPERLY REBUILT CARTER THAT CARTER DESIGNED FOR THE 235 !
Possible problems:
(A) 1/2 a million miles and the throttle shaft needs replacing and the throttle body needs bushing - just do it
(B) Mismatched parts - identify what you have and correctly match the parts (especially the metering rod and main metering jet)
(C) FLAPS "rebuilding kit" with Ford fuel valve (Ford used an orifice of 0.101 while Chevrolet used an orifice of 0.081, plus the Chevrolet valve should be spring-loaded).
(D) Electric fuel pump with too much pressure (3 psi is sufficient).
As has been posted earlier in this thread, determine WHICH YF you have, and its applicability to the engine. If the correct application, just fix it.
Jon
