Thank you for your replies. As a point of clarification, this is a new box from MB. I did a little research on recirculating ball steering. I read somewhere (not sure if unique to a particular make) that there are two areas where such a gearbox could be adjusted. The Allen key adjustment is the only one which can be made without removing it. Is this true? In the case of my new steering box, is it possible that the mechanic did not correctly make that initial adjustment?