I posted a procedure and pictures of how to take apart the speedometer unit so you can modify or clean the dust out. From my reading the various forums, I think many units have got dust or moisture inside and have been returned to the manufacturer or junked when they can be cleaned up and sealed better. I posted the process here. It is easy to do with a small amount of patience to prevent busting off small plastic tabs at one point. http://www.advrider.com/forums/showpost.php?p=11542859&postcount=27 - Mike
