So I have this old EIG derringer The grips were starting to rotate so I took them off (and wow was that a job, I don't know if they glued the screw into the plastic or what but I never thought it'd come off). Inside the grips there are something like 4-6 small raised pegs that serve to keep the panels in position and from rotating. They have mostly broken off or crumbled. I can still see where they would have been positioned however. Whats my best way to fashion a repair here? This isn't a collectable high value gun, it just has sentimental value so I just want to keep it functional. Could I just rough them up and put some little JB weld dollops on those places? Maybe mix up some fiberglass resin and wad up little balls of fiberglass and let them dry there? A metal pin or something would be fantastic but I'm afraid of doing too much damage to the grips with it.