Hoping somebody can help me. I getting an intermittent vibration coming from the front PS tire when driving. It sounds as if I am driving over corrugated road and stops when I take my foot of the gas. I rebuilt my knuckles about six months ago and I don’t do any off roading. I greased up my u-joints about a week ago too, having replaced both u-joints a year ago. If anybody has any ideas I would be extremely grateful.