All the high speed jet would need is a cleaning. If you were to go that far invest in a rebuild kit which includes all new gaskets and a new needle valve. I don't know what Berryman cleaner is but it sure sound good to me. After the dipping blow out everything with a aerosol can of carburetor cleaner and compressed air. You should be good to go. If the carburetor is really dirty inside dip it overnight instead of only one hour.
