I ‘m getting ready to do quarters on my car. I’ve removed the window, all rear interior trim pieces and I’d like to just lower the rear section of the headliner to keep it away from grinding and welding. I removed the 2 screws on each side holding the metal panels under the sail panels at the rear. It’s tight and doesn’t want to move. It was replaced before I bought the car so it’s not factory. My friend who does upholstery said it’s glued around the edges, heat it a little and be careful pulling it down. No luck. Any suggestions?