Visit factory. New drawingd for parachute cable fitment and routing. Got hold of some E-drawings - allows 3-d visualization - great! Gussett at front of firewall - found position of fitment. worked out the slider rail placement - had to cut a small section at bottom of rib 2 to allow the angle to pass under . wrong bolts given for firewall bracket - also diagram omits fitment of engine mounting. rough fitted slider assembly and anchor nuts on slider rail. Fitted skin again - positioning looks ok