A quick question, Thers is a lot of mentions around forums of worn cam adjusters causing chain slip on M271`s. ( although to be fair it is the crap chain ) I`ve got the top half of my engine stripped at present, what should I look for regarding the cams? I`ve not stripped the cam sprockets down as it`s not been needed to do do the valve job. Plus the build up of crap in the head exhaust ports was bad. Thx Coli.