Avblend or Z-Max for sticking valves??

Rislone is the actual name. And O'Reillys still stocks it.
OK, O'Reilly's just got a store here, so I'll check it out. My neighbor's dad used to rev his old truck up once per year and slowly pour a can of Rislone down the carb to clean up the valves. Us kids thought all the smoke was great!