According to our friends at Kawasaki, this sort of thing happens occasionally, but not enough to qualify as a chronic problem. Your dealer should be able to sort the whole thing out with minimal drama. But if you're in a DIY state of mind, check the dampers you should find at the various mounting points. Replace any that have worn out or gone missing in action and everything should be fine. The good news is they're relatively cheap, ranging from a couple bucks to a little over $10 for the most expensive one. Part numbers start with 92161, followed by various four-digit suffixes. There's a nifty diagram at www.kawasaki.com. Look under the three "Cowling" headings to find the dampers.