I built it not quite to stock. I wanted to glass and paint the whole thing so on the stringers I sheeted them in with 1/16" sheeting. The only other thing I did was replace the cowl with a glass one. everything else is as instructed.
My next 1/4 scale Extra (proto type) will be lighter than this one and for the most ppart should fly better. Don't get me wrong, it flies really well, but if lighter, it could be better.