I finished Inspecting the left wing for proper construction sections 13-17. Installed a fuel return fitting for my fuel injection system and pressure tested the tank with good results using the balloon method. Snooped and found no leaks (bubbles) noted and it held pressure for over 30 minutes with no change in balloon size, so good to go. I also filled in the pilot holes for the stall warner. I decide to install an AOA and not use a stall warner vane on this airplane. Using my borescope and rotating, I noted that my fuel level sensor is clear of the vent line, plus the float touches both the top and bottom of the tank with full stroke.