BalsaDust
Moderator
It is interesting that you do not sheet from the leading edge to the main spar. So as it is you must be ok with the stiffness of the wing.
Yeah there is plenty of strength there. Sheeting to the main would just add extra weight. The original prototype only had sheer webs in the first two bays of the wing and never had a problem. Since I didn't do carbon two in the spar on this one I decided to do them all the way out.