Every good mechanic is a good story teller because ever great detective needs to be creative enough to solve to puzzle - great, helpful video as always!

I really appreciate your insights! Thank you for the excellent guidance.
-From Vancouver Island

that bike will go for ever when its fixed , they are a great bike .👍

Maybe you could help me with a copper upper head gasket question. I have a 1978 ct90 that I am rebuding and I ordered a full gasket kit for it. It came with two copper head gaskets one with three cut out grooves and one smaller one with no grooves. The grooved cutout one is too large to fit into the head cavity and the smaller one is very sloppy with a lot of play. Do you know what gasket youd use for this year? I cant seem to find good info online.

You said there is a rubber o ring for two of the shafts.  Do the o rings go on before the head gasket or after?