i have a 2008 kawasaki klx140l now when i bought the bike i had carb trouble but the dealer fix that but now when i am going down the road about in 4 gear i give it the gas and it quits then i pop the clutch and it starts again then i shift into 5 gear and goose it and i spits and sputters and then it quits what is it i need help i think it the carb but it might be the cdi box could some one help me