Another member here said you can use that dish washing stuff as an alternative.
I have pulled out the wire mesh baffling out of the old faulty muffler with needle nose pliers and stuffed it into another. You make sure it fills the chamber as evenly as possible. There seems to be two lots minimum that go in there.
I just find some mufflers work better than others, but your ears can tell when the noise is blatantly excessive, especially that snip snip snip noise from detonation.
As long as it sounds acceptable to your judgment.
