I have replaced every suspension component including the shox on the front of my 99tdi apart from the lower track control arms and the anti roll bar rubbers. I have checked and double checked for any play and yet can't find the reason why the car hops on the front over rough ground. It also tram-lines rather badly on certain roads. It feels for all the world as if the whole front end moves around and yet it never really veers off course. Any ideas anyone?