Yes, I think the trial and error method helps in many ways of life Yes, there is a truth in these two tips, thank you. I also want to add that if the rotor rubs, we look at the clearance, which block it touches, we relax the caliper mount and slightly shift it towards the rubbing block, while the plane of the block should remain parallel to the plane of the rotor. We tighten the mount slightly, check for clearance, repeat the procedure if necessary. If the rotor rubs on both pads, they can be diluted by unscrewing the adjusting hexagon in the brake lever a little, while the brakes will begin to grab later, if you need, on the contrary, a smaller handle stroke, then the hexagon must be screwed in, you may need to align the rotor.
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Regards, Justin Wilson.