Completed installation of pilot's side fuel tank vent line. Also completed both sides aft fuel tank vent lines through fuselage.Reworked elevator counterweights. Previously had drilled out exposed counterweights to properly balance elevators. Took off fairings and swapped counterweights so drilled out counterweight now inside elevator fairing. Shaved exposed counterweight for appearance and reseated counterweights. Greatly improved elevator counterbalance appearance.Revised panel layout based on latest thinking on GPS and EFIS/EMS.Began work on mapbox add-on. Measured and cut opening in instrument panel. Clecoed map box together and clecoed to instrument panel. Measured opening on sub-panel and cut opening for mapbox. Also cut F-721A canopy deck for mapbox. Measured and cut support brackets for mapbox.Finally called it a day - good to be back working on the project!
