I would consider myself novice in building RC planes and need some help with covering open bays. I believe I may have made a dire mistake in designing these wings and might have to redesign them entirely. Open to all suggestions. I have woven fiberglass and monokote. Open to buying anything else that may work better. I realized my dire mistake when covering the controll surfaces, so I added balsa skin to the leading edges which helped a bit, but I don't see it being feasible with the wing leading edges. I covered 3 of the control surfaces and theres still some wrinkles I cant seem to eliminate without the ribs bending. Any thoughts to redesigns or different techniques/coverings? This should be flying about 80mph so im also worried about sag on the monokote, and believe ill have to fill the LE bays with wood support or revert to Hershey-Bar wings entirely to make this work. At this point I have 100's of hours into this as I 3D modeled every single part in solidworks before I started to build it. Again, open to redesigning if needed! One thought I have is maybe doing dope and fabric, then covering that with fiberglass for the leading edges.