Has your Doo Hickey and doo spring been "done" ?
My 2009 had some rpm's where it sounded a bit "metallic" at times, gone after the doo and torsion spring installed though.
I also have one of my highway pegs on my crash bars that has a sloppy spot. If I fold it in the sound goes away. They are $8 foot pegs........
Never do anything you would be uncomfortable explaining to the paramedics...