Cut the L angles, fluted to match forward skin curvature and positioned and pilot hole drilled to the forward skin. I used the HBH method to shape a couple of the thicker stiffeners that go over the L angles. Removed the Ls and added top pilot hole pattern and then drilled through the Ls into the stiffeners while Ls were attached to the skin to get the pattern. Only got a couple to that point before quitting for the day.