Is or has there been a problem with this carb as for not allowing the carb rotor to close completely?. I can get it to close BUT only with the stop screw at its limit of having the rotor to come out. No crashes or any damage with this engine and I have flown it before but was in the process of setting the servo up on another model when adjusting the stop screw the rotor was out. I have set many different engines stop screw and this one is not right. The engine is not new and has the needle valve in back.
