I have a 2011 CVO SERGU with 500 miles. At about 200 miles I noticed a rattle/ticking comming from the engine starting around 1800. It gets noticeably louder increasing throttle around 2400 up through 3000 and back down through 2000 RPM. I didn't notice it at first but I had a set of Vance and Hines and they were loud. I now have a set of Reinharts, a little quieter, and I heard on the way home from the dealer after they were installed. I took it back and the technician said it was a little "valve train" noise and that it was normal. Cruising around 2500 RPM I hear the rattle over the exhaust, maybe its just me. Is this "normal", or do I need to pursue the issue with the dealer?