Doc I'll try to remember to put the blow ups in the car to show you. Your drawing worked because they started as full size on the other end, were reduced and sent to you, then simply blown back to original. These drawings were never full size to begin with. They were computer generated the size of your computer screen. If you enlarged your computer screen to five feet all you'd see were hundreds of thousands of colored dots (pixels) and you couldn't make out anything. That's the story with these drawings. Someone other than the designer drew them in tiny size on a computer many years later because this cad technology didn't exist when the airplane was designed in the early 60s.