Oscillation trepidation !

[Captain Mike]

Hi 
Some time ago I had a 1959 rover, good car, but I had an issue with the steering when going over a hump in the road at slow speed, this was unnerving because the steering started to oscillate violently as if something had broken or a wheel had come loose, akin to somebody getting hold of the steering and pulling it left the right, the way stop it was to brake and slow down to a stop and then off you went again, this did not happen if you ran over a hump at speed only at 5-10 MPH or so, I never did find out what the problem was and sold the car on advising the purchaser of the issue

now to the point, its has started on my Ruby and the nightmare has returned! however I can say that I know where to look now because I have replaced a few things on the Ruby, namely , front spring and damper friction pads, bushes, and had the axle eye and king pin repaired on one side  

Has any body had this happen to their car and if so who did you cure it, I am thinking possible front damper to tight or tracking

any ideas 

Thanks
Mike