Drilled the lightening holes for the Vertical Stabilizer. Used the fly cutter in my drill press. It was slow going but I was happy with how they turned out. Saving ounces where ever safely possible is a good idea in an airplane. Let's me continue my ice cream habit. Cleco'd and match drilled all rib to spar parts, then cleco'd skin on and drilled skin to spar and rib locations. Finished drilling all skin to rib holes.