Clecoed the main ribs on the main and rear spars. Checked for fit and double checked that the right ribs were in the right locations.Drilled ribs to final size. Disassembled and deburred and primed the mating surfaces. Decided to use flex tubing for the wiring, so I am simply going to put a small hole in each rib near the existing lightening holes. They will be used to secure the tubing.