I drilled the 2 holes for the aileron cables. Holes dimension is 7/8 . Ran a string between the aileron pulleys to check the alignment and also the gap with the rudder cable. Everything is fine exept the upper pulleys. In order to keep the same slope on the rear roof skin, I had to move the false ribs backward by about 1 inch. Because of that the cable that go from the upper pulley to the aileron lever rub against the side of the lightening hole. I will then lower the 2 pulleys by 1 inch.