OX66 200HP chirping noise

[TownsendsFJR1300]

Those piston rings don't appear to be expanding much, if it all. Perhaps the angle of the pic..

I've never never seen "blackened" bearings, odd...

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[Keithbaja]

This most neglected engine service I sea each season is no one Does a decarb on a 2 stroker. Really helps does a lot of good for many things. Like piston cooling and ring sticking. Not a big, hard job to do.many, many guys don't even know about this service. So sad !!

[99yam40]

was it Rodbolt that said lack of lubrication will get the bearings before the pistons?

might look into the oiling system and carbs.
those bearing did not do the crank any good either