I'm not sure I understand your question. If you are talking repairs, then more than likely, someone has done that very thing. But, when assembling an ARF, well, there ought to be enough material there to properly hinge the control surfaces. Whatever you do, try to keep it light but strong. A tough compromise, but you can do it if you really have to. Minimize glue using the right glue for the job and wipe off any excess. Basic building rules also apply to repairs. You can be creative, and unique solutions always seem to come out of being creative. Share what you did when you decide what you will do.
Of course, it will be more difficult to do what you wish to do on the control surface because of the beveled edge.
Of course, there is always a solution called "doing nothing at all". If it ain't broke, don't fix it. Meaning, if it flys ok, then it may not need fixing
CGr.