Had the same problem with mine when we painted the car and had the doors off. Bought a aftermarket set of striker pins. Thought we would never get the door open even though we had open and shut it many times before it stuck. Lucky we had the interior out of the car. We were able to get to the back side of it from the quarter window area and loosen it and move it enough to get the door open. They now sit with my other aftermarket parts that fit many cars but not a 67 firebird.