Listen to the CA failure rate. I have seen more than one catastrophic elevator CA hinge failure resulting in a bag of toothpicks. They do not land well with one cocked elevator. The ailerons hinges may take it but the rudder and elevators won't live long. I like the Robart point hinges as well but there just isn't enough material in this area of this plane for them. The Sig XX Giant scale nylon hinges are perfect for this plane. If you get a broken hinge from landing stress, the plane is hitting the ground too hard on landing. The tail gear collapses way before the hinge of any type fails.

Notching the bevels to reduce or eliminate gaps is not the answer either. you want the barrel of the hinge exposed for maximum deflection without contacting the attached surface. Use the clear Ultracoat or tape to seal the gap. Your plane will perform great and you won't get flutter from air passing through the gap. All you have to do is seal the bottom side. If you don't think it will look good or something, watch a Flip fly and see if you even notice the control surface gaps in action. The surfaces are probably maxed or near maxed most of the time. It likes it that way.