Hi, Just picked up a 1998 620 RXC with 3500 miles on it for $2800. Love it- feals like a scalpel compaired to the GS I reluctantly parted with a few months ago- The bike needs tires but other than that it's solid. It's also bone stock. With the carb I notice some intermittent engine stutter when running at low rpm at constant throttle position- is this normal for the KTM or an issue with the Quicksilver? Also since I'm new to the LC-4 any tips you might have on maintence and mods would be greatly appreciated!