JEREMIAH - Everybody's interpretation of a term is different, but by MY interpretation of "Opened UP", Your engine definitely HAS been opened up! And by somebody with NO access to the Internet for the last ten years that the Kohler K-series service manual has been a free down-load. The star washer and lock washer both under the nut holding the flywheel was BIZARRE, and the head being replaced. I bet if you measure the crankshaft and camshaft end play you'll find them out of spec too. There's about a dozen different ways to measure them both, but using a set of feeler gauges is as accurate and cheap as any, and I bet whoever was inside that engine didn't do it.
Anyhow, I'd check all tolerances, check torques on bolts, not sure I'd replace the gov. gear, I've NEVER replaced one and never had a problem, guess I'd make sure there's one even in the engine. I'd re-install things and see if the knock is gone before committing to a rebuild too.
HARRY - I used to re-use tubeless tire valve stems, but when I had to take one of my 2 yr old snow tires to town to have a valve stem replaced because the rubber cracked where it went through the rim, I've never bothered saving them since. If a new one can fail, imagine the chances of a used one failing?
Anyhow, I'd check all tolerances, check torques on bolts, not sure I'd replace the gov. gear, I've NEVER replaced one and never had a problem, guess I'd make sure there's one even in the engine. I'd re-install things and see if the knock is gone before committing to a rebuild too.
HARRY - I used to re-use tubeless tire valve stems, but when I had to take one of my 2 yr old snow tires to town to have a valve stem replaced because the rubber cracked where it went through the rim, I've never bothered saving them since. If a new one can fail, imagine the chances of a used one failing?