Making the F-704M Web stiffeners, back drilling and match drilling the appropriate platenuts. Countersunk rivet holes for the platenuts. Drilled out to size the 5/8" hole to take the snap bushings in the forward and aft centre section, measured the two snap bushing holes either side of the centre section fore and aft, drilled these out and fitted snap bushings. Drilled out the holes in the side braces which will take the rudder cables.
