Need some guidance. Ive got what appears to be a 6/32 machine screw not tightening on the lense cover. I havent removed it yet. Im thinking a plate nut became un bonded? I dont want to remove wing tip. Im thinking of trying to get leverage under it hoping whatever it tightens into i can put upward pressure on it and get it to re tighten. Otherwise it will simply back out if no backing nut is attached. What would typically be backing this screw? Any advice on a fix? I really dont want to blind rivet or something like that as removal would be more of a pain. Only two screws hold this cover. One on top in the corner and exact location underneath.