I had refinished a Fender Jaguar Bass neck and when I went to insert the tuner bushings, there was too much paint in the holes and the headstock cracked in two places. I could see the tiny lines thru the paint. The clearcoat was applied too thickly anyhow and had never cured, so the whole neck (re)finish was removed. When I sanded down to primer, I could see the tiny crack lines in the primer so I knew they were cracks and not imperfections in the paint. I kept going. Now I'm down to bare wood, but I have another problem. The cracks aren't visible anymore and no matter how I try to flex the headstock with my hands, I cannot get the cracks to open so I can insert a glue syringe. FWIW, the cracks are about 1/2"-3/4" long on either side of the tuner hole, two thru the G hole and one thru the D hole. They do not go anywhere near all the way thru the headstock from to back. I'm certain that the bass will assemble and play fine without any repair at all, but I don't know when/if these cracks will start to run. Right now, they don't open enough even for me to see them- I know where they are only from remembering where the cracks in the color finish were. I know they're still there, but if they won't open, how do I fix them? I have cleaned the paint out of the tuner holes and will be extra careful when refinishing so that paint doesn't get into the holes and the bushings don't force another crack. Should I just wipe some glue over the area, hope it soaks into the cracks and wipe off the excess? Headstock will be repainted to match body color, so no worries about lacquer or poly matching the glue or anything. Thanks for any help anyone can offer.