I was just wondering why I have only 100 psi on eack cylinder. I honed each, added new pistons, and rings. I have heard that it may take a while for the rings to wear to the cylinder, is this true? I only have about a half hour run time on the rebuild. Yes the motor was run 5 minutes prior to compresion check, and my gauge could be crap, it is an older one. It sure sounds like its running good, and feels like good compresion when I pull it over.