On page 10-13, it has me attach F-01486E to the skin, then says in step 5 to slide F-01408 along the stiffeners, but that's not possible since it has no places for the 1486E, and it sits between stiffeners anyway. I can slide it along the skin J-Channel, but that means removing the stiffener I just attached (1486E). Am i missing something obvious, or are these two steps transposed?