I know I have a problem, but I'd like some thoughts on the severity. While on a recent road trip a few hundred miles from home the following occurred. When I started my bike after filling up, a noise came from the motor similar to a baseball card in a bicycle spoke. I immediately shut it down and pushed her away from the pumps to a shady area. After weighing my options and not having any good ones, I started the bike again to attempt to tell where the noise was coming from. To my surprise, the noise was gone. I shut it back off, let it sit for awhile, restarted, again no noise. I thought what the heck, and rode home with no phantom engine noises. Now, whenever I start her after sitting for twelve hours or more I hear a sound like a chain running dry. After about thirty seconds it quietens down. Any thoughts?