I popped the lower wing skin off today. As I expected, there are more air pockets on the forward face of the 7 bid reinforcing than I wanted. The aft face was very acceptable, however. Overall, the reinforcement seems extremely strong, so I went ahead and positioned the wing attach bracket, then drilled all holes. The holes are much easier to drill from the rear, so that's what I did. If I'd had a bit more energy, I would have re-mounted the bracket to the forward face of the shear web, as specified, but just didn't make it tonight.