Don't get too far from home.
Do you have a shop stand you can put the bike on? If so, remove the plugs, put the bike in gear and have someone rotate the rear wheel to see if you hear ANYTHING. Pull the clutch lever in slowly while your friend rotates the rear wheel. If something is loose you might hear it. I would also try it with the starter cranking it over (this might be too loud for you to hear anything) to mimic the engine running.