Six hours really is a gross underestimate for the time it took to square the wing. It took quite a while to really understand the process, then many more tries to get the wing straight, square, and the drag wires to proper tension. An adjustment in one area to get a wire to correct tension would lead to an over or under tension in another, so it was a process of slowly closing in on the goal. But its now done. Phew, quite an effort!
