Sorry Kruser, I'm going to have to disagree. While some whiteness is normal, it is also an indication of wear on the inside collar of the flybar and it's because it's carbon fiber. After about 50 flights with one flybar, I pulled mine because of TBE and the hole was clearly out of round. The only way that can happen deals with friction on the main shaft and the abrasiveness of the carbon fiber on the plastic collar. Next time I replace a flybar, I'm going to put some very, very thin clear lacquer on the mating point and see how that goes.

Scott