That is a pretty big gap, but I have seen airplanes fly with worse. I think what I would do, since you have already epoxied the torque rod into the aileron, is to go ahead and CA the hinges in and then seal the hinge gap with some clear tape.

To seal the gap, here's what you do. Get some clear tape that is at least 1" wide (like packing tape) and cut a piece as long as the aileron. Now set the wing upside down and flex the aileron downward as far as it can. Then carefully fold the tape lengthwise with the sticky side out (it doesn't have to be actually creased, but bent as much as convenient). Now the tricky part. You will stick the tape down into the gap between the aileron and the wing. Try to work it as far as you can down in the gap. A small screwdriver and/or a popsicle stick will help push it down and make it stick. Might take a couple tries to get it in straight.

Don't despair, it can be done. Actually, it would probably work just as well to do the tape in 2 or three pieces.

You can do both the bottom and the top sides, but just the bottom is probably enough. You do the bottom because that's where it will show the least. Doing the top also will help keep dirt and fuel from loosening the tape.

When you got the tape in there good, flex the aileron back and forth to make sure it moves easily through it's full range.

If you want, you could use the Monokote trim sheet instead of clear tape. This has the advantage of being in different colors (although it will probably not exactly match your colors) and it also comes with adhesive on it with a paper backing. You can cut a long strip, fold it with a good crease, peel off the backing and stick it into the gap. Good luck!