I finally adjusted my valves, 135K miles. Exhaust Valves were out of spec at about .009 in. Spec is .010 to .012 in. The Exhaust Valves tighten over time on the K-Series so keep on top of the Adjustment interval. If you wait to long it can distroy your camshaft. The thick oil that I have always used in this engine is doing a fantastic job. Just look at the pictures.
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