If you didn't like that small dent in the passenger muffler you should have immediately returned it. I can guarantee you Coz would've immediately shipped out a brand new HKS Hi-PO exhaust for you, if you would've shipped it back when you originally received the shipment and found the defect. EVERYONE will chime in and defend Coz b/c he's always provided the best service possible, 100% of the time for many years running. A parts vendor can not provide satisfactory service to you if you decide to install a damaged part instead of returning it.