theres a scraping rotating sound coming from my front right brake area, ill drive and itll be normal, and then 3-5 mins later itll start scraping/squealing and it gets louder the more i drive, when i hit the brakes it stops...after a while it gets really loud...i went out side and pushed back the bottom, left and top part of the shield and it still does it, the pads are almost brand new....this started happening right after i removed the caliper to check on my pads...any ideas? i figured it wouldve been teh shield since i remember touching it and i might have moved it