Short work session but made progress removing HS-814 reinforcement angle. It worked really well with the rivet removal tool. This angle is wider than the next one.HS-810. I had minimal room to fit the body of the rivet tool on the rivet head and the skin. Only one hole that got a little "egg-shaped"(the 5th hole from the left). It only got egged on one side....it will be fine to use since it is only one and only 50% of the hole is egged.