Hi Folks- I'm just completing the 1,000 hour rebuild on my twin 16/2. It's been running well, thought I want to KEEP it running well. Rehoned the cylinders, new rings, and decarboned the head. Mind you, the carbon buildup on the exhaust side (both heads) was...a good bit. Not insurmountable, but still a good bit of work. I suspect the standard mufflers are likewise "coked".
So, the question: Other than mechanical abrasion (scraping), is there a better/easier way to decarbon the entire exhaust port AND mufflers? I'm thinking of trying a pressure washer...anybody got experience here?