The pictures included with the build disk suggested that I make a mold for an outer rib so that when the foreward skins are pulled in everything stays aligned and straight. I used a piece of 2X6 so that it was wide enough to just slide in, and still have enough hanging out for reference. I didn't want to make two seperate pieces of wood (one foreward of the spar and one rear), so I used one long piece and just cut a slot in the middle. This slot slides over the end of the spar and keeps everything aligned. I only made one. I'll just use it on one side, then flip it over and use it on the other.
