i have read many posts on belt creep for different models, this is my experience with a 2013 500 ho. i have read about one way and two way bearings of the primary clutch, come to find out this model dose not use the bearing at all on the primary. what i found on a machine with less then 500 miles is the secondary clutch buttons were wore already. after researching the buttons i found that polaris superseeded the number and upated the part (different shape) and hopefully a harder plastic. buttons were replaced and problem solved . hope this helps some one else. also check out EPI they have replacement buttons , sold as a 10 dollar kit.