What is exactly inside the cataltic converter "cats"? Are there baffle plates in there and can these become loose and vibrate making the vehicle sound like ****? I think this has happened to my Magnaflow X-pipe that is only 7 months old. Is there a way to gut them to eliminate this rattling sound. I have called the shop where I bought it and am waiting to see what they will do (manufactures warrant should cover). If not I was thinking of running a ProChamber, do I need MIL's for this or not?