Dealing with your headliner.
Phil, Tire's no easy way to do this correctly but that said, it needn't cost an arm and a leg. Buy a portable air tank or a pancake air compressor as well as an upholsterers staple gun. I'm including eBay listing numbers here for an affordable tank here: 311743722879 and an upholsterers stapler here: 142185746358. Copy those numbers one at a time and paste them into the search box on eBay to view them. Of course if you want a compressor and a hose, Home Depot or Harbor Freight are good places to start as well as eBay. Here's how to get to the underside of your deck hardware. Remove the the plastic staple cover from the outer edges of the headliner, then pull out the staples. Don't be surprised if many of them are rusted but remove what's left anyhow. Now with the headliner pulled away in the work area you select, access to the fasteners will be easy. If you see signs of leaking from the mounting hardware, consider a permanent repair by drilling out the thin glass inner liner and balsa using a 1" hole saw, just up to the under side of the deck. Tape over the hole you created using the thin liner as a part of the plug. From up on deck, inject thickened West System #105 epoxy through the 1/4" mounting hole with a disposable plastic syringe enough to fill the void you have just created. After it has cured, drill out the center of the epoxy plug, bed as required and mount or remount the hardware. Use stainless staples to reinstall the headliner being careful not to pull too hard and stretch it creating wrinkles. A pair of needle nosed pliers might be helpful. Look carefully at the staple holes and where they were originally as a guide to installing the new staples. The benefit of the upholsterers gun is that it has a duck nose, allowing one to get into a corner, you get the idea. I've done this before this way and to see my vinyl headliner, you'd never know it had been selectively removed. Go for it, Glyn Judson, E31 hull #55, Marina del Rey CA