Racking my brain here...I have a 196cc Coleman CT200u ex. Bike idkes fine when choke is on. As soon as I flip the choke off it goes without even touching the throttle. Would not be that big of a deal but my boys ride it. It get hairy when you let off the throttle to turn or slow down. It slows down some but not enough without hammering on the brake or simply hitting the kill switch. Any ideas? Bad clutch? Idle issues? Anyone else ever had this issue? Maybe just do an engine swap to a predator 212?