just need some help. i have a 98.5 contour se and am changing the brakes. I have 65,000km roughly 40,000 miles. i have the front pads taken off and am trying to get the disc off. I have been hammering at it for a while and it doesn't seem to be moving. Am i missing a step? Do i have to do something else before i can get the disc off. any help is appreciated. thanks.