File and sand XNB-L03-06 spoiler handle pivot bushing to allow friction fit with nylon washer. Plans call for "snug but free" fit. Has plenty of free, still requires additional sanding with medium emery cloth to achieve snug.
Examination of riveting XNB-L03-05 / -16 clip to spar tunnel looks to be a complicated interaction with several elements between the clip and tunnel.
Will look at fastening the aft end of the handle mount angle with a square tube to fuselage skin instead of the -16 clip.
