Ok so.. i skrewed up and the adhesive just dried so fast i struggled to keep up with. now after a week of being installed i have a 4 inch bubble where the adhesion between the foam and the board has let go. Any thoughts on a possible fix?
Will post pics tomorrow.

 

Stick a needle thru it, and squirt some adhesive in there. Either that, or take it down, strip it off, re-glue it, reinstall.... Yeah, that sounds like fun......

 

Pull the headliner and place it cloth side up. Put a piece of plywood or something flat on the bubble and place some weight on it. If that doesn't work, a razor blade can cut it and you can spray some adhesive into the opening. Otherwise you need to pull and reglue the fabric.