Lin and I did the first riveting on the HS. We started with the left side middle nose rib. Lin bucked and I ran the gun. She did a good job. The first rivet is the forward most rivet and the most difficult to get at for the bucker. I'm not sure how anyone ever set these before the advent of the small tungsten bucking bars. I highly recommend this tool. It is well worth the $$. After setting the middle nose rib, I riveted the end nose ribs with the squeezer. Pretty straight forward, except for one forward most rivet that was difficult to get the squeezer on because of the flutes in the nose of the rib. The squeezer slipped and put a little notch on one side of the shop head. I'll ask Joe if I need to redo it. The rivet is the lowest one on the right side of the nose in image 2. It doesn't show the imperfection very well in the photo, but it is there.