Please read my previous post on this but basically (Aug 2013-present) a knock developed from what seemed to be my steering rack and over many months the n/s/f tracking would go out and pull to the left, so had the tracking reset a couple of times. In February 2014 had a new rack fitted by my mechanic with a reconditioned one from Camberley Auto Factors plus the near and o/side front lower ball joints and n/s/f shock absorber and then had the tracking reset. Kwikfit had problems getting the camber/toe and straight ahead adjustments right. The knock from the new steering rack is much worse now, and my van still weaves/wanders a bit over bad road surfaces as it did before. It also has a tendency to veer left mostly but sometimes right when coming to a gentle stop, depending on camber/road surface. There's also the same knocking when going over bump/potholes, that seems to be mostly induced from the n/s/f wheel area. The front end also seems to roll a lot on cornering, and say if you go over speed humps when steering is in a turn right/left position. (i.e. - rocking from side to side) this can also cause the knocking. ***The knock can also be simulated by rocking the van hard from side to side with the engine off and the wheels in a straight ahead position. ***April 1st 2014 - Went to a Citroen dealer today who checked it out and said I need a new rack, as they said the rack is what's knocking! I told them I'd only just had a new one fitted! Their diagnosis seems very odd to me, especially when the original rack which was replaced had nothing wrong/no play in it. ***I'm beginning to suspect the knock, (which is felt in the centre part of the steering through steering wheel and down by my feet where the pedals are/bulkhead) may actually be caused by something else, and the knock isn't really the rack but something in the associated steering/suspension components. In other words, the knock can be felt at the rack but may be masking the cause. I can't see how two racks could fail like this. Can anyone help me nail this or suggest the next move?