I have an OS 46 AX. When the engine is not used for several weeks, the carb gets stuck. When I move the throttle, I have to grab the arm the clevis is connected to to get it to move. Once it frees up it is fine. I have tried after run oil but that does not seem to help. I have gotten to where I have to work the throttle every few days to keep it from sticking. Any suggestions?

thanks,