I deburred and riveted the cowl exit lip and inner scoop piece to the bottom cowl, and then drilled the bottom cowl for CAMLOC receptacles. To do this, I widened the original hole out to a T-sized bit, then stuck the shaft of the bit through the hole to hold the CAMLOC receptacle in place while drilling the first leg. Then I cleco'd that leg and drilled the second leg, then removed the cleco and drill bit, deburred, and it's ready to rivet.