I've been charging along on my tail kit. I hope to be done in the next couple weeks. I'm currently back riveting stiffeners into the elevator skins. I'm noticing that some of the rivets, probably about half, seem to very slightly clinch over to one side. I've tried about everything possible to change that, including different air pressures, making extra sure the rivet gun is square to the work, etc, but it seems to keep happening. Is this normal? I feel like the rudder went much better, but those rivets were shorter. I asked my tech advisor and he said to make sure the rivet was centered in the back rivet set. I tried that and made extra sure, but same result. I think I'm pretty good at bucking rivets, so I bucked a couple rows and noticed that some of those rivets did it too. Any thoughts? Is this normal? Am I being too critical? Here's a picture.
https://photos.app.goo.gl/9BsMJxooQmzULXxXA
https://photos.app.goo.gl/9BsMJxooQmzULXxXA