I used the HD horns, DID NOT MOVE BACK AND REDRILL HOLES IN elevators and ailerons. Place bolt in hole provided, then measure to to hinge line and drill new holes in the horns, grind off excess horn and you got it. No big problem.
I know of no GIANT ARF thet is supplies with bolt-on, no work, no thinking, hardware. I have built three (3)Wild Hare planes using the supplied hardware and have not encountered any problems.