Looking closer those scratches are really uniform and evenly spaced apart like the oil ring scrapers are not holding the center section of the oil ring in place. Maybe that rough crosshatch wore the oil ring scrapers down letting the center section rub more than it should or, one of the scrapers seated above or below the center spacer letting it come out and rub the cylinder wall. Whatever the problem is that oil ring center spacer should not be out against the wall making those marks.
Hows that even possible for the oil rings to move around in the cylinder like that when the rings are properly assembled? And belive me they are properly assembled, i have been almost redicoluos meticulous with this engine.
