Rattling Cat...need advice

[trueog]

Hey guys, on my C220 i'm starting to have a Rattling Cat.Convert. Like in the mornings when I start the car up, i hear the exhust pipes rattling and crackling. I lifted my car up one day, knocked on the cats and it seems like the lead in it, is falling off. It sounds awful like theres an exhust leak. Do you guys think its my cat? or would it be some loose screws somewhere? Also if its my cat, do i risk damage by continuing to use my car like this? It drives fine, sounds retarded. I called a indy mech and he told me if its my cat, eventually the loose parts will burn off and it'll stop making the Rattling Cat noise, but won't pass emissions.... So what should i do? try working on it? leave it alone, or swap it?