Root ribs for the upper wing panels and stabs were made today. The wing ribs are made out of medium balsa with doublers of fiberglass skinned foam. The stab roots are made from the glass skinned foam. The stab adjusters are held in place with CA and CF pins. The position of the stab adjusters and wing anti rotation pins is not critical, I just like to have them as far away from the wing/stab tubes as possible.