Clecoed aft seat floors and center cover plate in place. Used 3/16'' hole transfer punch in EF-680 and drilled pilot holes thru floors. Holes were then drilled to size. Drew outline of bushing blocks on F-605's. Drilled one #40 pilot hole thru the left F-605. It appears that the bushing blocks might be interfering with the existing rivets and ribs in each corner.
