So what I did when my headliner was starting to "peel off" at the back. I got a glue stick from the dollar store and carefully put it on the roof padding then carefully pressed the headliner back on so there were no wrinkles and tucked it back into the top. Unfortunately i didn't think to get any pictures and it wasn't perfect, but close and hardly noticeable and it held up. How long it will last? I don't know since I sold the truck.