Why is my front brake rubbin ????? And how can I fix it??????

[bullfrog]

0811152209.jpg0811152209a.jpg0811152210.jpg0811152213.jpg0811152213a.jpgSo I changed out my Qlink xp200's stock tires for some Shinko 705 90/90-21 went to put them on and everything went on fine. Except during the test ride I noticed a "knock" coming from the front wheel. It looked like the bolt heads connecting the rotor to the hub were rubbing the brake pads.
SO...I loosened the front wheel so it spun freely but it was still slightly rubbing then tightened the front wheel to the point it was very hard to spin then loosened it again to the point the front axle bolt's head was flush with the rest (point were the wheel spun freely)
Then.. I loosened two bolts connecting the brake to the bracket and spun the wheel many times. And by the time I tightened the "brake Adapter" bolts it seem to of helped some but there is some rubbing. Also my rotor is not warped al all.
I did another test ride and I could hear it rubbing but I didn't feel any vibrations. It just makes me worry. How Can I fix this ? I really want to ride tomorrow. I'll try to remember to put up some pics.