I just got my utter chaos for Christmas and I Think its going to be a good one. Instructions are a little hard to understand. I built a wing jig out of 1/16 3/4 angle made the wing easy to build. could send pic if you like. The wing ribs have a notch in front and back that the angle slides into. I am looking forward to getting it flying. will be flying SPA pattern this spring with it. Gary