The rivet line on the lower rear skin to the bottom of the tank channel was never laid out or drilled when working on the left wing. Laid out the rivet line on the lower tank channel, pitch 40. Rivet line location: 158 mm from rear channel center line to center line on the tank channel at rib #1. 160 mm from rear channel center line to the center line on the tank channel at rib #2. Drilled & clecoed with #40, then, updrilled to #30, deburred & vacumed out, then riveted. Rechecked Nav & Strobe lights "OK" Left wing is now finished.
