It has happened before...use a strong magnet on the INSIDE of the hood to see if you can move screw around. Then remove NACA duct (don't lose all those shims...and watch the sides of the hood as they are SHARP)..then use a SMALL flexible shaft pen-light-sized magnet that is about 2 feet long through the hole in the side of the NACA duct to attract the screw as a friend tries to walk it toward your smaller magnet with the larger one. Good luck...and DON"T get your magnet stuck (like we did with one of those cheap, flexible graspers !!!)