Can you hear the noise if you hold the front brake and bounce the front end? You might check the front wheel bearings, look for something loose inside the fairing, I would also grease the neck bearings and check the fall away and smoothness on the front end. Sometimes the inner & outer fairing can make a noise rubbing each other on a bumpy roads if their a little loose, also check that the slider covers are not rubing the fork tubes when you hit bumps. Happy hunting