I have had problems from aftermarket rings on overhauls in past.
Ring gaps must be different positions.
Make sure sized correctly, STD, 10 over, etc.
If it were me, I would carefully run it in just a bit more. Low RPM on stand.
Proceed at your own risk.
Smoking
Just a little longer....68' 305 Dream, 75' Honda 750-four, 74' Honda CL 125, 72' Honda CA 70, 80' Honda Passport, 74' Aerimachi Harley Sprint 125, 64' Yamaha 90.
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