This atv will go through about a box of plugs in a month, Service says that its the fuel sutoff v is the problem, I have had the carb done three diffrent times. It still eats plugs,. And it does't have very good topend once the plug go's. I need help with this ATV because it is my dads ATV and he uses the 4wheel to get around the farm HELP!!!!!!!!!!!!!!!!!!!!!!