Fixing is probobly not worth your time. It will get too messy with glue. I've never done one on a Reatta, but it's pretty universal. If you dont feel like paying $250 to get it done, do it yourself. First, remove all the trim, visors, etc. around the headliner. Then, you can remove the actual headliner board. It is velcro-ed to the roof, so be careful, and take it slow. Then, remove all the old material, dust it off, and shoot it with coat of 3M adhesive. Let the glue set up for five minutes. Then it's time for the new material ( found at some auto parts stores. ) Start in the middle and work your way to the sides, removing the bubbles. Let it dry for a half hour, trim the excess ( leave a little all around ) and put it back in. Good luck.