I replaced the front pads and rotors on my 2000 Beetle. Much cheaper than paying the garage to do it. After everything is reassembled on the driver's side, the rotor doesn't seem to sit straight and I can see it deviate from true at the same spot each time it turns. Just a slight wobble, but enough to hit the pad and make a scraping noise every rotation. Even after I torqued the wheel back on, the noise is still there. Brakes work and the noise stops when the brakes are applied, but I can hear the scraping again when braking less than 10 km\h. Then the noise starts up when I accelerate again. I thought the rotor was warped, so I returned it and the new one does it too. Any ideas?