How are you measuring a piston ring ?
That’s a new one to me.
How are measuring the bore?
What does the piston measure and what is the size marked on the crown?
The only time a ring is actually “measured” is ring end gap when it is in the bore.
All specs and how to measure them all are in here, if you don’t have a Clymers Repair Manual
https://www.blasterforum.com/thread...ervice-and-owner-manuals-free-download.17325/[/QUOTE I measured with a caliper the out side of the ring and same for the jug