I have a rattle in my exhaust and it seems to be coming from inside the resonator? what is inside the resonator that would rattle?

here is a video.

its a custom catback. two magnaflow mufflers and a resonator.. i don't know if that is stock or not.

http://www.youtube.com/watch?v=8rbal...ature=youtu.be

 

Shoot... This is the wrong sub section, I meant to put this in the cooper s section.

 

There are metal baffles inside and if the welds break or they rot from moisture, heat, etc., the baffles will rattle. Annoying to say the least.

 

Crazy annoying... Guess ill just straight pipe that section