@frost: I haven't touched the air box myself, but I'll look at it tonight to see if maybe something happened to it during dealer assembly.
@AZ: I'm pretty sure it's from the engine. If I lean over the speedometer when I'm riding, I can hear the noise coming from directly below me.
I first noticed the noise in all gears and all speeds, but like I said, now only in top gears/speeds.
Is this just a bike that is happy cruising along at 45-50mph in 3rd gear? Maybe I'm just in too high of a gear for the bike. Every other bike I've ridden would only be happy at those speeds in top gear.
I'm taking the bike to the dealer on Saturday to install Lo-Jack, so I'll have them take a look at it then and keep you posted. In the mean time, any other comments are welcome as I try to figure this out!