I prefer the flex hone myself. You don't need to stay in a cylined for 20-45 seconds to get a good cross hatch. Try 10-15 seconds. Clean the cylinders with soapy water, then brake parts cleaner or acetone and then re-oil. Like already said you are not going to fix an out of round cylinder with a hone. I've honed a couple of Hondas and a lot of bmw's with this method and it has worked well each time.