I updrilled all the holes that still required updrilling to #30 and #36. The aft skins were already done but the locations that attach the skins to the spars and the holes through the root doubler/wing walk still needed updrilling to #30. The forward skins were updrilled to #36. Notice I did not use a #32 this time. A fellow builder from Sydney pointed out you get a better, more snug fit when drilling to #36 and then dimpling, even though onex recommends updrilling to #32 before dimpling. A quick test confirmed this is a better fit, thanks Tony!
