When I built my wings, I followed the Homebuilt Help videos and they made a mistake. on where to pull measurements from to establish the trailing edge of the wing. Quite a few 750 builders followed suit and I was one of them. Today I tackled the redo work which required drilling out the rear spar rivet line, about 75 rivets, repositioning the trailing edge to the proper dimension, and redrilling. It was a pretty easy task to do, just a lot of repetative work. I went back with the larger A-5 rivets to compensate for any ovaling of the rivet holes. It turned out nice and I put the wings back in storage.
I also replaced my elevator control tube with a revised Ed. 2 model which has an adjustable fork end.