More drilling today...lots more drilling. After I fitted the F-724 and F-722 ribs in the baggage area, I drilled everything to #40 and then started drilling the F-770 skins in all of the places I had not yet done so. I then spent some time evaluating how best to go about the disassembly and preparation of the parts. This is going to be a big job so I will probably make myself a checklist to ensure that I don't miss something...or worse, have to redo something because I forgot a step. Tomorrow I will start the disassembly and all of the deburring, dimpling, countersinking, and priming.