Picked up a used 2008 King today with 4500 miles.Test drove the bike 10 miles prior to purchase and all seemed fine.After getting the bike home and washing it I went for a ride,after about 10 miles noticed the front of the bike would bounce up and down when applying the front brakes until the speed dropped below about 28 MPH, then the bounce would disappear.Warped rotor?Seems funny to just happen out of the blue.Nature of the bike?Never seemed to do it during a test ride of 10 miles.