Hi there any help on this chain seems a bit rattley on the oil pump I've had cams and lifters looked at and been told there fine oil pump in car history was Done in 2015. Never had any oil pressure light on as yet but thinking of buying the Audi A4 2.0 TDI Oil Pump Balance Shaft replacement delete kit on ebay. But would like to no some one to fit it who no.s what there doing could some one help me out here thanks