What sort of problems are you having with building a QuadraJet? I've been working on them since the mid-1960's when they were first introduced, and unless there's been severe corrosion or other damage to the castings, they're one of the best-designed carburetors on the market. Of course, it's necessary to use the correct part number for the application, and follow the adjustment procedures exactly, but that's true for any carburetor regardless of manufacturer. Most problems with carburetor rebuilding end up being operator error, not the fault of the carburetor.
Jerry
