The dingle hone will make it look good to the eye, but what happens is, it hides a low spot all the way around just below the ridge in each cylinder. What you might try is a three stone hone. A real one in a machine shop, not some junk on the parts store shelf. That will at least get rid of the low spots, but then you have to contend with the cylinders being too worn at the top. I'm going the long way around the barn to tell you that in all likelihood, it needs boring