I have dusted off the ole ergo and found she needs a flybar. I just happen to have two, one stock(710mm in package) and one unlabeled, perhaps from old xcell(480mm) or something. How short a flybar is too short for the ergo .60? Last time I flew her, I was getting into 3D, so would like to use the shorter flybar if the length sounds reasonable. But,come to think of it, I never did try any yogurts with the stock flybar(710mm). The stock flybar just looks ....really......stable.