Hi all, I'm new to this chat, and looking over some of the topics have given me some insight to the knock that I am hearing in my engine. (My local mechanic didn't have a clue except to say it didn't sound like a crank.) This is what I know, The keeper pin on the balancer drive gear on the crank is worn and needs to be replaced, however with the balancer driven gear removed I can turn the ballancer manually and there is a rough spot in it's movement that produces a knock. The strange thing is it is not consistent with every revolution. Maybe a bearing problem? Also there are metal shavings on the magnets inside my flywheel. More bearing problems? Anybody dealt with this problem yet? Any advice would be appreciated. GLEN T ------------------ The brave taste of death once, but a coward dies many times before his death.