Stopped at the service department at my dealer in SW Florida; SunSports. I was told, "Oh, it'll be about $150 to check the valves." I then told him that it is a single cylinder engine with four valves and then he told me that it should take about an hour and half and "...$150 should about do it because we have to remove the radiator." The service manager did not check the Honda service manual...'cause he doesn't have one. I have resolved that am going to have to do my own valves and routine maintenance after the purchase of the service manual as soon as it is released by the printer, Helm. I have ZERO confidence in this dealer. Not sure what I will do about shims however...