2003 C4S, low miles and noisy exhaust?

[NutmegCarrera]

Hello, team.
I have a great car. ‘03 C4S that I bought with < 9,000 original miles.
I am the third owner and received all documentation with the car.

Car is equipped with PSE
PSE works as it should. Button is functional and causes the “wonderful” sound to change to quiet as it should.

I went through a typical “new to me” oil change and analysis of the old oil through Blackstone. No issues - comments about how clean the oil is. Did the air filter and accessory belt at the same time. Also added a magnetic drain screw. Used Mobil 1 in this oil change.

Car was updated with the LN engineering IMS bearing during previous owner’s tenure.

Previous owner kept car pristine and put very few miles on during his ownership (2007 to 2017). Sounds like it’s not been driven in the rain.

Anyway -
The car sounds noisy: Seems to be a random “ball bearings in a tin can” noise coming from mufflers. Seems to be increasing with amount I drive it.
This sound is not a timing chain slap type of a sound.
Good oil pressure.
Good performance.
No CEL (and the lights are all active when turning on ignition switch).

Does the 996 (and maybe specifically the PSE option) typically exhibit a baffle coming loose in the muffler? Is this something that any of you guys and gals may have experienced in the past?

I’d hate to go down some goofy (example - cam chain tensioner) rabbit hole and spend tons of money to find a problem that really isn’t one at all. But - you really don’t want to continue to drive something with an imminent failure under the deck lid.

Any experiences are of interest.
Thank you.