The cheap rings have different marking than my old Action Fours. TOP on one side only, AF has T on one side end, 100 on the other end. On top and 2:nd rings.
So they might be of a cheaper make... My clutch plates are made in China according to the package from Cruzinimage.
These oil rings are not that flimsy.
Not as my last experience with 71.25mm JE that gave me more experience
I need a new cyl for my old 65mm pistons since the clearance is about 0.1mm. No oil smoke last time. There is a risk that the garage wil get some cylinders.
The old 836 can be bored to 849 and new cheap pistons. Old 736 to be bored to 836... My Action Fours 836 look like to be possible to use with 1.5mm longer rods (CB900)....