If what you are using is actually ca hinges, what you do is insert the hinge into the slot on the wing & install the aileron just like you want it to fit, flex the aileron down & drop about 5 or 6 drops of thin ca right on the hinge between the two surfaces, it will wick into the hinge & into the wood the hinge is slid into, do this on top & bottom of the hinge & make sure it wickes into both surfaces. & thats it.

Gil