hello, i got new brakes two weeks ago...new front rotors and new front pads..i have had to take my car back twice now so they can adjust the brakes. while driving for a while the steering wheel starts to shake and the car drags..apparently the brakes are expanding and dragging...are adjusting the brakes this hard or is it an actual art..i am getting real aggrivated taking in my car and not being able to drive it much.. thanks for the help, kyle