Did a repeat of the left side longeron and drilled out the right side longeron, then did the match-drilling for the F-1012 (at the rear of the tailcone), and then started the longish job of moving clecos around whilst final drilling all of the holes in the skins. I didn't get too far, so I'm noting where I've been in my build instructions (essentially doing the rows [stiffeners] first and then I'll come back and do the columns [bulkheads] after.