Copperbob

I took my JK off road for a little mild action and developed an annoying rattle that is coming from inside the plastic panel where the seatbelt retractor is (on the driver's side). It seems to only rattle when I hit potholes on the passenger side (or similar rough terrain). I haven't taken the panel off yet but was wondering if anyone has had a similar problem? It is right by my ear and is driving me crazy.