look for an old ajusto jig for the wings as for the fuselage,on the ziroli planes I have built he uses an internal crutch to glue the formers to.the crutch usually leeds to be about 6 inches off the building surface.I use a solid core with a liong straight line that I use as a ceter line and then O use some 1 by 8 pine squres also with ceterlines in about 6 places to support the critch which is also centered on the standoff centerline and tacked in place with titebond while the formers are glued in place a nice triangle helps keep everthing vertical