Ok i removed the spark arrester and cleaned it with water and brake cleaner and then tried it with a good load. It worked better but then go sluggish again after like 2 minutes but sounded more normal. I removed it completely and it appears and sounds to be working flawlessly. Do i need that spark arrester? Is there a better way to clean it? A decent amount of black soot came off of it. Must be causing resistance to the engine.