Thanks for coming to the event. The only concern I have with the spring action is they may suck UP in flight. There is a lot of suction on top of the wing when these planes are flying. With a servo attach point, at least you know they are locked down. What about a cable that slides through a ez connector but when its closed, the cable holds it locked. You can still use the springs to close them, but the cable will lock it down?
Great job though.