Hi everybody I have 92 735iL with 141000 miles. I bought the car about two months back. I have done a lot of work to it. Starting with new oil pump,timing chains,sprokets,radiator,hoses,driveshaft etc.But getting to a point. I adjust valves on it twice withn 1500 miles. (cold .012). It is quiet at idle but when I rise RPM they get louder and louder(engine is super clean, there is no oil build-up at all). Is there worn valve problem? At a top where rocker arms contact them on that engine with such milege? should I go to .011. Thank you for any help. Arek 92 735iL