I've finally recovered enough from an injury and subsequent surgery late last October. The day before I got hurt, I ordered a Dr. D exhaust for my '07 YZ450. It came a week later, but at that point I could not ride..........So I finally took the bike out this weekend and 30 min. in to the ride, I caught a rock and totally smashed in my head-pipe and also bent the silencer where it meets the head-pipe. The silencer also has a small bend near the 1st weld back from where it meets the head-pipe. Does anyone have any experience with Dr. D customer service? I'm thinking they may be able to fix the silencer.