sounds like it's coming from the top end..it's almost like a buzzing sound, doesn't sound like valves to me (but I aint' no expert!!). Here's the story. Wife and I are planning a ride to St. Augustine in the morning so while going over the bike getting it ready I noticed a vibration/rattling at around 2500rpm..it is definately speed related as it immediately goes away if I let off the gas. It sounds like a very fast tapping (like a loose heat shield) but seems to be coming from the top end which concerns me. Bike is an 08 FLHYC with 30k on the clock, always run M1 20w50. PUll the clutch in an rev it up and the noise is there, right around 2500 rpm. bike runs fine and I've done noghting to the engine/tranny. It really sounds like a buzzing to me which Im hoping it is but don't wanna ride to St Augustine if I can't figure it out. Any ideas?