It doesn't matter how they are fixed. You should always pull on the control surfaces to test the integrity of the bond. You don't have to take a crowbar to them.
ORIGINAL: wings
Or put glue on all of them..... you really don't want your surfaces seperating while your'e flying!
They are not CA hinges. If you yank on them too hard it will pull a big chunk of balsa out of the wing or aileron as the directions say they are epoxied in.