I was thinking of holding the wing vertican and use a full bottle of CA and saturate the aileron hole.
I don't think that's a good idea. It won't take more than a half dozen drops at most to harden that whole area.
BUT, before you do that! If there's slop in the aileron that's allowing the torque rod to move, then the hole for the torque rod is already enlarged. Adding CA will NOT fix the problem. You're going to have to inject epoxy in there to fill that void.
Now, you're also going to have to be extremely careful where the epoxy ends up. If you're not careful, you may eliminate the slop, but you'll also eliminate all movement.
Dennis-