Thanks - Interesting that I never thought of that. I do have some vibration at 30-40 MPH so I did adjust the front pinion (in conjunction with adding an SLE and the no longer needed trans/transfer case spacers) and it is within specs. Will recheck these other points.The axle is pushed too far forward via the control arms. Or the front pinion is too high. Or the drag link is bent from ramming into something.