Bought a project and looked at the fuselage where the wing connects (sorry, still learning what to call things, I call it the wing box but I don't think that's correct.) My buddy, who is helping me, who built an-6 suggested we get Vans to give us a suggestion. I found two holes that are not satisfactory. One looks like it was torn, the other looks like sloppy drilling or perhaps re-drilled incorrectly. Opinions based on solid FAR references go to the head of the line.