Now I rig a hole for the hinge wire to go through the wing root (in some cases the pin will need to go through the tip as a torque rod will be in the way on the root). Now I check the alignment of the elevon to the wing all around the perimeter, again opening up the trailing edge hinge holes as needed to get things lined up. Once it looks good I slob in the Aeropoxy, plenty of it. Some oozes out but that is good as it helps stabilize the exposed part of the trailing edge side of the hinge. This is a VERY critical step, so I usually line up the entire perimeter top and bottom with alignment sticks (little bamboo cocktail forks). I put tape on both sides of the gap and then CA the sticks to the tape.