Decided to work on the Wing Root Fairings (top and bottom) before re-installing the flaps as access to the fiarings will be easier without the flaps in place.
Clecoed the wing root fairing supports to the fuselage. Installed the lower fiarings, which required several trials with trimming the fairing to evenly match the fuselage side while screwed into place on the wings. Did the trimming primarily using a file.
Once properly fit, drilled the additional match holes in the lower fiaring to the supports.
Installed the wing fuel vent lines.
Began fitting the top fiaring in a similar manner.