It could either need that or the rotor isn't straight. Is it constant or intermittent?
I'd have to roll it out again and check if it lasted a whole rotation. It's very subtle so I didn't notice it at first, it's not audible when riding.
Try and resist the urge to lubicated the rotor.
@hippy started
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It could either need that or the rotor isn't straight. Is it constant or intermittent?