I just painted my break calipers, but i didn't take them off the car. I also used a brake cleaner spray to clean the calipers while they were on the car. That was like a few hours ago. When i pulled my car into my garage, the brakes seemed fine at first then started to "rumble" as i came to a stop. I could feel the vibration. It only happenes as I slow down enough to come to a complete stop. Is this normal when you clean the brakes with spray? How do i get rid of it? Please help!