Thx guys, The fuel tank saddle is rubber coated....


Also, about the hinges, i did a test hinge with thin epoxy and as far as i'm concerned, if that hinge is coming out, it's going to take a whole bunch of balsa with it so i am not worried. I think CA would just be better because it's less messy and isn't going to 'join' the wing and aileron together and give it less movement.