I am having a hard time trying to think through a situation where standing and or power would put significant stress, strain, or force on the front axle and fork, separately causing a gap change between the two. Frame yes, but frame flex does not transfer to a twisting force thru the fork and then to the axle. Even extreme equalizing force pulling on the bars to counter crank force would apply stress evenly thru the downtube and not twist the fork. I must be missing something. Only thing that makes sense to me is play or excessive movement of the front hub on the axle and it moves back and forth while standing. Hub and rotor move but caliper doesn't and then rubbing.
Last edited by u235; 04-24-19 at 05:44 PM.