OK, about these Robart "Pin" Hinges. I have seen in the "How-To" video that they are very long. My question is, does the whole length of the hinge have to be in the wood. I hope that you know what I mean. So, in other words, could I put these "pin" hinges in my Somethin' Extra? Or would the stabs and elevators, ailerons, rudder, not have enough wood at the edges for the hinges to put them into............Do the hinges come in different lengths if ya hopefully know what I mean??????? THANKS.......