Before installing the skin to the vertical stabilizer, make sure that the front of the nose rib flanges are rounded or you will find that it when you apply the skin, an outward dent will appear.
"Well, it hit soon after finishing the rudder. The drawing on page 8-5, Front Spar Assembly, is correct, but the mental gymnastics leave a lot of room for error. The spar caps(HS-1013) go trimmed side against the spar web, but that is only semi-obvious from the drawing, because it is drawn with those parts away from you, not facing you as they are when you clamp them in. The text is also correct, but late in the day, reading only twice, instead of six times, I screwed up."
Thanks to Kelly McMullen for this!