[V8] Headliner Fell

[FreddyP]

What is the common wisdom in fixing the falling headliner problem these
days.  Mine had been a little droopy in the back seat area for the last
few years, but this recent heat wave presumably gave it the last push -
pretty much the whole thing is down from the rear of the sunroof back.
Before I take the utility knife to it I thought I would check with the
list.  Thoughts?

Fred