Quote: Lyman "Wouldn't that be conducive to torsional vibration on the elevator hinge?"
I think that is what I was sort of asking towards the end of my long post. But hadn't considered the vibration aspect, just a simple twisting of the elevators in relationship to each other. I've seen the question regarding the use of only one TT and a reason for it, asked on numerous forums but not ever have I read an inkling of reason for doing it.