[HowardWoodard]

Wow morzh, you have access to some very useful doc.  That cross-section (Fig 2) is dynamite.

   

As you can see, if the ball wasn't attached to the vernier shaft, the shaft would simply back/fall out.  Which is exactly what happens to mine now.

Starting tomorrow I'm gonna start calling some of these local Boeing fab shops that do the small custom fabrications.  Even if they won't reattach it for me, they might tell me what the best method for doing so is.

Thanks.

Btw, here's a pic of a different '30s Philco radio fine tuning mech.  It's a different model but they used the same method for implementing vernier control.  Note the ball-end.

All-American Five Philco 54C – Part 5 – Philco Library