My 06 Ultra with 18K has developed a wooble when I decelerate from anywhere between 35 and 55 MPH. This happens when I'm not holding the bars, and gets to the point of 3 to 4 inch swing back and forth. I know you should hold on, but the point is, there is something amiss. HD replaced the rear tire this spring and did a 10K check at 13K. Anyone out there have any ideas? HD's cure is to hold on tight. I want the bike 100%, not 1/2 a**ed as far as handling.