Cool beans!
Thanks for the 'post of experience'. The engine is supported in 2 spots with a large piece of HDPE. Only need to hear it for a few seconds to determine what path to take.
So, Wilson01S, are you fixed then? What did your engine tell you when you ran it? No more "clunking" I hope?
I too heard that by removing the OLD oil from the chain tensioner and replacing it with NEW oil, it may calm down the 'regular' chain startup rattle…yours was NOT a rattle - but the RATTLESNAKE SHAKE!
Bet you'll be doing REGULARLY SCHEDULED oil changes from now on!