Finished Alodining the lower skins before then continuing with section 26. Did this section with very few surprises. Lots of nutplates and attachment of the ribs to the bulkhead. Made the mistake of putting in the bolts the wrong direction which made redoing them a little time consuiming, but no issues. Had one rivet where the gun head skipped, but otherwise flawless -4 rivets in the spar.