As I've worked on these flap and aileron hinge parts I really recognize what a great value the AviPro parts are. These "page 13" parts can be purchased from AviPro for a very reasonable price. I've come to the conclusion that you really have to want to make parts yourself to not cave into the time value by purchasing the parts all ready made. If I didn't have such a desire to do it myself I would have caved by now!