Brief Description: NACA duct and landing brake profile sanding
Sanded landing brake and surrounds, including the NACA vents, to a nice profile, then fiddled for ages removing the scratched up tape.
Removed all the formwork around the NACA and main landing gear cover, plonk it in and sand to profile. Recheck the measurements, and profile is now as I desired. The edge of the NACA is still a bit funky, and there is exposed foam and fill more than the magic 1/16" thick, which will need protection from cracking.
Make some more dams to nicely define the edge of the NACA and hot glue them on.