Interesting, just got to work out how to do it with the kit available.Try a longitudinal slot in the tail pipe of yr silencer, 4in x 3/8in, pointing vertically downwards. It does sweeten
the crisp note of yr straight through exhaust.
I was thinking " how can I hold a big silencer in a small milling machine" but angle grinder sounds more my style.4.1/4" angle grinder, With a thin cutting disc.