Removed peel ply from the 2″ BID tape on the seat brace/heat duct joint.
Trimmed the fiberglass edges using a small hand saw.
Sanded the taped joint and vacuumed the assembly and work table.
Sanded the bottom of the heat duct flush with the lower fuselage longerons.
Temporarily clamped 2 x 4s across the bottom of the fuselage to ensure the bottom of the heat duct was level with the longerons.