Well, after spotting a couple of XK's over obstacles one guy had a bunch of trouble making it and I was confused at to what the problem was. Then it hit me he said earlier he didn't air down what a difference it makes uh. During the first day we headed down some long rocky service roads. About an hour into it I got fed up and air downed to 25PSI and instantly my ride smoothed right out and the family was happy again and the wife just wanted to know why I didn't do it an hour ago.