I have no vertical play in the front end but when I grab hold 12 and 6 I get a loose dok.dok. When i travel don the road and hit a pothole the front end shakes dramtically so I slow down and it stops . With the car on the ground I was under the front end and had someone turn the steering wheel. I can see that the top of the steering box moves, losse to the eye and the sound seems to come from it. I thought it might be the steering damper? Can this type of shaking come froma broken steering box or very loose box that needs adjusting? IS it Wheel bearing needs adjustment?