I made a jig to hold all four fittings in place. I then tack welded the “U” fittings to the fuselage.
The front leg fitting with half inch tubing to hold everything aligned. The second tube is for the cabane strut position.
The rear fuselage fitting.
Additional plates either side of the front “U” shaped fittings.
Additional plates either side of the rear “U” shaped fittings.
The completed port side fittings.