Against my better judgement i decided not to install a tip weight box. Now I am flying around with double the tip weight i need and have to cut into wing to drill it all out. Unreal. Ya, i dont need adjustable lead outs or tip weight box some say. But this is not a box stock Winder with a fox 35 or 36x with a crankcase pipe sticking out the back. How you going to fine tune it? There is no reference. I didnt build 3 identical models and adjust the trim after the last. Maybe i should fly it with one of those 5" spaced sullivan handles too.