New Std rings? and honed cylinder? if you ringed it just because you were already in there, cool. Usually though, it's done because of specs, or being still within them enough and the cross hatch is thin or gone. You didn't mention ridge, reamed. That's the important thing to do, if there was any ridge at all, and honing will smooth it out some, but it'll still be there to meet the first hard driven sharp edges of the new rings and they don't give much. If you used a ridge reamer, a half turn too much, or less can make a cylinder no bueno, like right now. On the leakdown test, (it kind of is a technical operation, time consuming that has a 1 or 2 extra arms and hands semi requirement to complete the mission, so) to get the results of what you want, to know where the leak is, rubber tipped air nozzle or rubber hose even, taped to the threaded end of the air hose, go up from 10psi to 30max and you'll hear where it's leaking, easy.
