Well I sure do - it sounds like something is loose in the nose whenever I hit a bump or go over rough pavement. I tried applying the brakes lightly when a rattle-activating bump is coming up, but no difference. I have had the fairing off twice looking for something loose - found several missing push-pin connectors, along with several bolts that weren't tight - including steering stem nut (could turn with fingers), left side engine mount (1/4 turn w/ torque wrench to tighten), horn mounting bracket, left fork tube clamp, front fender mounting bolts and windshield mounting bolts. No difference. Just about the time I decide that I am just going to have to live with it, I will hit a bump and think "Dang - what is that?"
I know this doesn't help - but I feel your pain.