In attempting to re-finish the cabinet doors, I decided to replace the hinges as well to get something that will match the new cabinet door pulls.

I have gotten all of the cabinet doors off, except for two screws, one in each of two hinges. I just removed the door from these two hinges, but I cannot get the last screw on each of the hinges out of the cabinet. It's as if they have been epoxied or fiber glassed in. The hinge will turn on this screw, but the screw will not budge.

Any suggestions for removing them without damaging the fiberglass? Any products that may loosen an epoxy bond?

I could probably drill them out, but that may enlarge the hole in the fiberglass and make re-install difficult. Surely others have met and solved this problem.