I’ve never ran into this before, I usually use chemical guns VRP. You could possibly try putting some heat on it, I’d be careful though to only apply it on the black pieces. Maybe try the underside of the taillight to see if that could help before going to a more obvious spot.
I have a 2022 overland with 2inch Mopar lift 10k miles, it drives me nuts as well, it’s like once you hear it once during your drive you hear it the rest of the trip.
New jeep owner, loving it so far!
Overland
No crazy modifications yet
Only fox 2.5” with 35” nittos
Eventually hoping to find a decent steel front/rear bumper.
Wife, kids and pup loves it so i’m happy!