Today I started fitting the upper forwad skin to the sub-panel, ribs, and firewall. I put in a few rivets to attached the ribs to the sub-panel. I also used double-sided tape to stick some scrap angle the the sub-panel web to help keep everything straight. I put the skin in place and set up my little carboard and blanket bed to lay on while I drill. I ran out of time before I could do much drilling, but it is a start