When i disngage clutch pull clutch lever in my bike just in this full high rev and i can t stop it.. the only way is hit kill switch or ingage clutch again it will not idle i have cleaned carbie,jets,adjusted idle screw the right way i think
sometimes the carb slide sticks a little and don't return as quickly as it should. also, make sure the cable aint sticky or hanging up. check for air leaks in the carb intake. make sure the slide is in correctly. if ya put it in 180 degrees out it will not go all the way down. there's a pin inside the slide hole that fits the long slot on the slide. check that it goes easily all the way to the bottom when ya put it together. checl all that but I'm thinking its a intake leak. while its running pour water over the intake near the carb connection AND near the engine. if it sputters or dies ya got a leak.
fatdaddy.