Continued to work through the skin and stiffener sections, and inserted hinges into their 'home' pivot points to ensure progress was not distorting frame. Stiffness of canopy frame is amazingly improved by swapping clecoes for rivets! Will be solid with canopy plexi installed.
Found that 'on-the-fly' back-riveting was a good method to get best material contact and control rivet gun and carefully rivet without slipping to the side. Used a handheld buckiing bar for this.
Final shape is excellent and fit perfect on the longeron contactand overlapping side skins.