Just bought new softail fat boy 2013 103 371miles on it, An I started hearing a metallic clicking sound when I revved it alittle in neutral or with the clutch in. Took It to the dealer where two mechanics listen to it and said nothings wrong with it some do it some dont. Had a street glide new come in with same problem an Harley Representative come to see it said it was fine nothing wrong with it . Anyone else hear about this or have this issue? How can some do it an some dont an it be normal?