Drilled out the necessary rivets on the bottom of the fuselarge. Slipped the bottom doubler in, located the marked 10mm edge distance line through the rear spar flange mount holes in the bottom of the fuse with out the spar installed and backdrilled. Removed the doubler from the fuse, clecoed it to the spar on the bench and backdrilled the front flange rivet holes and drilled the forward new rivet line. Clecoed the doubler inside the fuse floor and backdrilled through. Replaced the doubler to it's position under the fuse and installed the center spar and drilled everything to final size.
Started fitting the front side uprights.
I did as much as I could on the bench to minimise the need to work where it is hard to get a drill in
