Fabricated a 24 inch long 2" X 4" and cut 45 degree bevel along length. Cut and fabricated two 3/4 inch angles. These are needed to "ROLL" the lower aft mid-fuselage skin corners. I stressed on this step a few hours while cutting the wood, and thinking about it too much. The real key was "setting up" properly....taking my time and it turned out to be a "cake-walk". I am slowly learning that the preparation and "Firmly securing" the work is the most important step in most of the tasks to building.