Putting a new top end in my bike, and the cylinder has "ring marks" from the cylinder rings. Possibly caused by it being a leftover '11 and not being bought until this year and sitting with the piston in the cylinder for so long? I've been using scotch brite on a home made fixture for a drill to bring the crosshatch back, but these rings aren't disappearing. Checked the cylinder dimensionally on a cmm yesterday and everything checked out good, but are these marks a problem? You can feel them with your finger, but only barely. Bike had compression and ran good before the tear down. The second picture you can see the distinct outline of the oil ring. Would you run this or replace/re coat the cylinder? Or do you think a ball hone would do the trick?