My son is fixing up a 1987 Golf. He is rather detail-oriented and a few small bubbles in the headliner bother him endlessly. That and girls, who seem to bother him slightly less, is all he talks about anymore. I suggested he remove the headliner, peel off the old fabric cover, scratch laboriously off the old adhesive, buy new headliner fabric and headliner spray adhesive and do the job the right way. He wants to know if he can inject a fabric adhesive with a syringe through the center of a bubble, push down on the fabric and attach the loose fabric. What sayeth you?