Okay, if all your needles are set like I described before, then its not a carb adjustment problem. Next take your body off and your air filter and elbow. Turn on your radio and receiver. Operate the throttle open and closed and watch what the drum in the carb is doing. Is it opening and closing quickly in response to your throttle? If not, find out why. Throttle return spring stretched, or missing? Linkage catching, or binding on something? Gunk in the carb? If your drum is opening and closing quickly and none of the other things are happening, then the next thing to look for is an air leak around your carb, your fuel tank, your fuel line If none of these, and you're sure your carb is set right, send the engine back to Hobby Services for their analysis and fix. (it should be still under waranty).