So John, you are telling me that if you statically balance a stab with the pivot point at 31% MAC that your stab will not flutter? If so then you are wrong! It doesn't matter how much you balance your stab on the ground if it is inherently aerodynamically unstable in the air. I guess pretty much 90% of the models out there should be fluttering then since that's about the percentage of planes flying that do not have static balanced stabs. Feel free to continue to balance yours though, to each their own, it certainly wont hurt anything.