Put a new dinlop 756 on. When I reinstalled the wheel and the calipers I noticed that the caliper were a liitle tricky to put back - trying to get the front disk in between the brake pads. Anyway, once all reinstalled I got the front wheel off the ground and gave it a spin. I could here the pads rubbing against the disk. Nothing horrendous, I could just hear them being in contact. Should I hear silence when I spin the front tire (like brakes on a regualr bicycle that sit off the rim a slight amount), or is the contact normal?