Well, looks like I'm gonna need to buy another muffler to experiment on. My bike runs great now, and it's just right as far as noise, so I don't wanna chance doing something I can't undo without costing me a fortune. I've scratch built a muffler for my (expansion chambered, weedeater motor powered) R/C boat that really worked well, so I may even try building something from scratch, or from a cheap Ebay piece.
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