Sloppy steering

The steering boxes weren't great from the factory when new. 50 years later, they terrible. When suggesting and adjustment on a factory box, nobody seems to do this properly. The first thing you are supposed to do is back off the sector lash. You must adjust the preload on the worm first. Once that is set, then you can adjust the lash with the sector.
Or, treat your self to modern, bolt in steering...Bergmanautocraft.com