Today I spent a couple hours marking the hole locations, and drilling the W-407 B, C, D, E, and F to the spar web. I pilot drilled the inboard spar flange strips to #40 on the drill press. I then match drilled them to the spar web, and then out to #30. Pic 3 shows the components disassembled, deburred, and ready to prime for final assembly.
