Let's get this party started. I will begin with something small, like the stabilizer. The Vertigo II has a thick, diamond shaped stabilizer airfoil. The purpose is to soften the elevator feel around neutral, for smooth pitch response. It works, and does so by creating some almost dirty airflow behind the airfoil highpoint, the opposite of a laminar flow section. When Kraft Systems offered something new called "exponential" as an upgrade to their Signature Series radio, I set mine in and got it. I found that exponential in combination with the diamond shaped airfoil was too mushy. In the photos, the dark line is the grain line. It is important to align that with the high point of the airfoil so the balsa skins will fold evenly over it. Having the grain cross the high point at an angle would yield some funky results. The rest is straightforward skinning, I will not go into detail here. BSI 20 minute epoxy is used.