This was just a quick session to countersink the 5 holes in the attach bracket of the left and right fuel tanks. These holes must be countersunk to accept a dimpled skin, so they end up being relatively deep. The holes were then touched up with an Alodine pen to prevent future corrosion.
I also spent some time applying Permatex #3 to the plugs and installing them of both fuel return lines in both tanks.