I have a 2008 KLR that is making a rattling sound at 3k rpm. It sounds like a loose heat shield. I checked the heat shield and it is in good shape and the noise is still present when the shield is removed. I checked the header nuts and they felt nice and tight. I'm totally lost as to where this obnoxious sound is coming from. It has not affected performance at all it is just annoying. Any thoughts on where I should be looking?
2008 KLR 650