Huge day, dissassembled forward fuselage after up-drilling. Deburred all parts, cleaaned, zinc coated all except rear spar tunnel. Dimpled/countersunk spar tunnel attachment points. Cut nice vent holes in both sides and riveted formed vents to inside. Reassembled all parts, leveled and carfully made sure forwawrd fuselage was straight and level with no twist. Riveted sides & bottom skin, did all hardware/bolts for sides & bottom skin.