Its not Chevelle related but my Fathers G8 has a Magnaflow catback on it and just recently it has started making a horrible rattle from the driverside axle back portion of the catback. It sounds like there is something loose inside the tip. I know you guys have a lifetime warranty on the systems, I have my reciept from when I bought it, but I cant find the warranty card that came with the system. Am I out of luck on getting that one axle back replaced?