70 Auto console shift button popped out

[tman]

All, as I was leaving a car show, I pressed the shifter button to reverse and the button popped out.  What the heck keeps it down?  Had to take the spring out so I could still shift it.  Is it the set screw that keeps it in? 
or is it broken? 
Thanks for the help.

[Strawdawg]

Isn't it threaded onto the end of the cable?

[MEK-Dangerfield]

I think the spring just screws in.

[quapman]

The button itself is threaded and I believe it's keyed to the outer knob. To install, spin the whole enchilada with the set-screw loose, then when you're to "depth", tighten the screw. The threads might have stripped since the button is only plastic and it's 40 years old.

[Strawdawg]

And, in that case, you can contact Mr. Q and see if he has an Auto-Grip handle for the '70 because it is the best solution

[tman]

Thanks Q for the instruction.

[Chryco Psycho]

I installed a helicoil into the plastic knob on one shfiter button but it ripped out the helicoil , you can try to helicoil the button , I would use some JB weld behind the helicoil if you try that . Steve is correct it is keyed to the outer knob & they both thread down together but do not thread it on too far or the button will not depress far enough to clear the detents
 Steves [Quapman] shifter is by far the best option , it is all steel & you will not have any issues with it & it installs in seconds , I have put those shifters in a few cars now & my customers love them