Tacked. Note that we had to swing wider than 1/4″ on this flange. The factory hole in the wing was hogged out oversize in that area. When we lay the pattern on, we usually have to trim off a little metal here and ther – it’s not a uniform amount, but it is usually within the hole in the pattern. In this case, the hole in the wing swung out, and we just made that up by leaving more metal on the conversion flange.