i had the same problem with my power torque, u can check if the cut off wires actually work by taking them out of the carb and touching them against each other while the engine is running (just make sure you are holding the insulation of the the wires), its difficult to explain how i fixed it, just make sure they are in well and if they touch when the throttle is in the off position, if not they aren't in properly, or the carb isnt adjusted properly.
