Attached allthe ribs to the lower skin by positioning the lower skin on its side. Is a bit weak with out the skin, and logerons so have to be very carefull. All ribs were riveted, and logerones secure with zipe tie. Rib 4 was riveted the facing the wrong way! grrrr. Had to drilled out and reposition it. Shoulder harness attachment braket was fitted also.
