Stock mufflers, right side sounds like its blowing

[havinabubble]

currently got stock mufflers on my 2017 Street Glide Special...

apart from it being the world's quietest Harley (aka stealth mode), I seem to have developed a blowing/rasping sound out of the right, rear of the muffler.


Doesn't seem to be a leak where the can joins the header, sounds like its coming from within the muffler on the exit

If I put my ear towards the back of the bike you can hear it, but any further forward, nothing.
Def not the left muffler.


I take it there is some form of wadding in them?
could something have moved/fell out ?

any way to cure apart from replacing (which I' plan to do next year)

TIA

 

[Mojo]

Just guessing here at a possible cause as I've had this in the past:
Check the 2 collar flange bolts for each header pipe at the engine for looseness.
I had a whistle/hiss one time and tightening these four nuts solved the problem