I finally replaced the belt on my '09 400 with 21,750 miles on it. For some time now I, as many others, have put up with the clutch squeal/groan on takeoff particularly, when cold. And, like many others found that when I had things apart and blew the belt dust out of the CVT workings, it often helped for a while. However, as soon as I replaced the belt (and, I didn't knock/blow off any dust besides turning the clutch bell over and tapping it on the ground, as I had blown things out quite thoroughly very recently), all CVT noise ceased! Now, I am thinking the noise was the belt all along and wonder, has anyone tried using belt dressing on the belt of their 400 and, did it stop the squeal? If so, did it have any negative impact of any kind?