I can now verify that each vertical stiffener is it's own unique piece and can only go in the location that it was drilled for. These parts are not interchangeable.
I started out by placing the few parts that still had any part number that was somewhat recognizable. I then took each piece around test fitting each location. Sometimes it took up to 20 minutes just to locate one piece. Sometimes it would fit close but not just right. Once located in the correct position it was pretty obvious that it was correct so there really was never any question.
This was a long tedious and mostly frustrating day but all parts were re-identified. The remaining parts were prepped for primer.
