I've question for you. Have you heard of a problem when pulling away at junctions or manoeuvring round a car park a knock coming from the drivers side. It's not the ARB bushes or drop links as they have been replaced. I took it to my Seat dealer in Kempston who can't narrow the fault down although he admits it's there. He thought it may be a steering rack and the knock is because its under load and its hitting the end of the lock. He can also reproduce this on the lift but is reluctant to replace the rack.