Moose,
Did you get this solved. I would bet $ to donuts its a spine issue. By the way some old timers say that you cannot get one too stiff. Theoretically that's not so. The tuning guide offers some 123 on it. If your arrows are close to a match on the easton board then I'll bet you have contact. Spray down the fletching with foot powder and see if any rubs off. Mechanical release is presumed.