Thoughts on what to do with a bad carb linkage?

[52flthed]

This is exactly what happened when I had my original carburetor rebuilt. Brought it back, shaft was replaced and extra springs on the plunger but it was still un- drive-able. Finally had to replace it with a brand new reproduction, now it runs flawlessly. So despite changing my other throttle linkage I now know it was the carburetor. I miss the original one and still want to get another shot at getting another one rebuilt.