Sagging headliner blues

[Wallace White]

Fellow listers -

My 5k is showing its age in the most undignified way possible: letting
its headliner sag. It's now got a big bubble of loose cloth right above
where the rear passengers' seats are. Yes, I realized this shortly
before my in-laws came in town. At least it wasn't hanging down low
enough to hit their heads! But it will be soon.

What to do?

I've searched the archives. I find the following options:

(1) New headliner assembly from the dealer. $400 plus installation. (Did
I say this was an option? Whoops.)

(2) Remove the whole headliner assy and pull the cloth off, then use
lots of 3M trim adhesive spray (not Super 77), let dry partly, and press
the cloth down again.

(3) Thumbtacks. Crude but clever. Some listers report ill results: not
only is it ineffective, but the thumbtacks may become projectiles.

(4) Tent pole. (My idea.) Does obscure visibility somewhat.

Any other suggestions? The cloth hasn't completed separated from the
foam yet, so I can't get in and put an adhesive in without pulling
things apart more...

I'm considering #2 but with a pressure-sensitive adhesive, like a 3M
467. We design the stuff into products at work and it sticks like crazy.

Thanks,

- Wallace
  '87 5kcstq 179k