I've noticed a rattling noise coming from somewhere under the gas tank. Its especially loud when I'm accelerating uphill or quickly. Doesn't seem to affect performance, and I can't find anything that looks loose or out-of-place. Just sounds kinda scary - like something important is going to rattle loose!
Also seems to be running kinda hot - but this might just be me being paranoid...
Just moved across country - had the bike in storage for a couple months. Don't know if this would affect anything.