Annoying interior rattle

I’ve got a small rattle thats developed by the rear passenger seat. I’ve tracked it to be coming from above the seatbelt area and ended up removing the interior panel to track it down. With the panel removed it is clear that the rattle, which sounds almost like a creak or a buzz sometime, is coming from above the liner. I’ve peeled the liner back some, as far as I could without creasing it, and it sounds like the sound is coming from the curtain airbag area.... just wanted to see if anyone else has had similar issue and if they were able to resolve it. Creak/buzz is mainly noticeable when speeding up, slowing down or turning.
Any help is appreciated.