Today I fabricated the center section stiffners F-704M and installed nutplates. I also attacthed F-782 and 783 support covers, installed their nutplates and grommets. I cut and square theF-904J spacers. I was going to install the spacers but I noticed that the holes in the rear spar are not drilled to sized but the fronts are. This seems odd so I will check with some other builders.
