Quote Originally Posted by SlowPro48 View Post
even if Dub's right and you don't have to completely remove the headliner, (and I'm sure he is)
Wish I shared your confidence...

You may have noticed, I tried to leave myself some wiggle room when I included sentences like "I think it might be possible"...

If I was going to repair the base, I'd go with several coats of JBweld epoxy.

The stuff in the tube(s) is pretty much self leveling, & it's sandable & paintable.

I fixed a cracked banjo fitting (fuel injection) on Suzy several years ago in Moab, & haven't had a problem since... (where's the "knock wood" smilie when you need it)

I didn't even add a reinforcement layer, though if I were to take a "do over", I would wrap it in kevlar fishing line.
You could incorporate a layer of fiberglass cloth in the process, to repair the base.