I never saw that the first time around. :thankyou: Also I called UEM to make sure my measurements were correct. They said .030 is the minimum so I can even take it a couple thousands more. I think Ill shoot for .031-.032. The second ring does have end gap of .005 per inch of bore min for a boosted engine. So with my 3.94 bore x .005 I get .0197 minimum. So shooting for .020 works for me!