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Just bought the 2007 S type diesel I've been contemplating over but not took delivery yet, The reason being a front end knock when driven over anything other than a smooth road. Had the anti roll bar bushes renewed to no avail, it's been up on a ramp for most of the day with three mechanics under it but they in their wisdom are still unable to trace the offending fault, looking for ideas as to where the problem lies. Looking for ideas guys as I know nothing about this model, is the suspension adaptive, could it be top mounts or maybe shocks? So come on my friends what could it be, want to pick my new baby up soon, REGARDS