just had this car under 2 weeks and noticed it makes this catching sound , as if something is out of balance around the Auxilliary pulley area, skoda Technician told me there is a technical service bulletin out on the Alternator pulley, anyone else have knowledge of this phenomena in the 2.0 150 bhp euro 6 diesel engine ? Car is 26,000 mile skoda approved superb estate 2017 full service History just had the pre sale multi point check as well that Skoda Approved cars undergo. Thanks in