Its not rock or anything related to the rotors/brakes b/c the noise isn't prevelant when the hubs aren't locked. It not the steering bearings either b/c I rebuilt the axle in the spring. The only thing I could see it being is the brash bushing or the martacks. But the martacks have worked fine up until now...and when the go bad the axle would spline in further not out. I think i'm just going to ride around with the hubs locked for awhile to so if I can find some wear mark from whatever is rubbing. It seems to be most prevelant when decelerating. Who knows I always have the unsolvable problems.