I just added monokote to the hinge gap on my latest build and here is how I did it: 1st step, place the wing on the side of the table with the aileron "hanging down" out of the way and cut the Monokote to length. Iron to the wing first, not the aileron. start at one end, iron down, then stretch tight and iron down the opposite end. Next iron down in the middle poking holes with a pin in any air pockets that may develop. 2nd step, adhere the Monokote covering strip to the aileron by still maintaining the wing on the side of a table with the aileron hanging down in the "full down" position and working the iron in short strokes back towards the trailing edge across the entire length of the aileron, the key here is making sure you work back towards the trailing edge. 3rd step, lift aileron up to the "neutral" position and the Monokote strip will crease along it's entire length so with the edge of the iron only work the iron down this crease, this last step will make a real neat job out of the project.