Holy cow. I can't believe this took 7 hours. Lots of making sure stuff was oriented correctly, countersinks were on the right side for nutplates, stuff like that. Fabricated F-704M Web Stiffeners. Drilled holes for snap rings in F-783B-L&R, and F-783B-L&R Cover Support Ribs. Reamed holes for #8 machine screws in all components including Center Section web as appropriate. Installed all called out nutplates. Riveted F-704M Stiffeners to spar web. On the F-704M stiffeners, I spent probably about an hour researching and pondering, because I was unsure whether the -3 rivets that attach the nutplates should go through just the stiffeners, or through the spar web as well. If you just put them through the stiffeners, then the heads are going be sandwiched under the spar web and if I ever strip out those nutplates, It will be a hassle to replace them. After staring at the print for a long time, I realized the ortho view shows very clearly that they only go through the stiffeners. Made sure that they were centered and screws went in with no probs before shooting this together! While I was waiting for primer to dry, I also fabricated the F-904J spacers per print. I wen't through the inventory list a few times looking for raw stock for them and the only correctly dimensioned aluminum tube I could find was a couple of 4"sections in a bag with the brake pedals, so I cut one up to make these spacers. Hopefully that 4" section wasn't supposed to be used for something else on down the road. Overall a good day. Next time I'll shoot the F-783B cover supports on.