I have a question. When sheeting the stab,rudder and wing would it not be easier to pre hinge everything before sheeting? wouldn't this mean perfect alignment of the control surfaces? My old mentor Darrell Kampschror showed me how to do this years ago. He actually ran the wing hinge wood from root to tip to help strengthen the wing without much weight gain. Granted doing this requires the foam cores to be cut for the wood and the wood to be beveled a bit. This ties the wood for the hinges to a fair amount of the sheeting rather than just the edge and foam. Then a template is laid over the wing once sheeted and the control surface is cut out.

Seemed to work well for us.