After dimpling the inside edge of Seat Floors and corresponding Seat Ribs, I spent a few hours leaning over the longerons and into the fuse to install the rivets and nutplates. By the time I had finished I could barely stand up straight. I did mess up one of the blind rivets by not pushing it down into the hole all the way, but I was surprised with the ease with which I was able to drill it out and replace it.