Finished riveting the ribs to the spar with # 5 AD solid rivets. Drilled 2 each 7/16” holes with a unibit for the rubber grommets that the trim motor wiring will go through. Dimpled and squeezed some #3 flush rivets in the tooling holes that are in the center section nose ribs. One of the tooling holes was where I put the grommet hole.