My 900s had 230 miles when I took it in for the initial service. I told the service manager that it is always jerky when I back it out of the garage and still jerky when I take of slowly in low. Soon the jerkiness stops. The mechanic called and said the belt has a "hot spot" and needs to be replaced. They would not warranty the belt so I had them install the new Gates belt (from Hunterworks) that I had on hand. When I went to get the Razor I bitched to my salesman about the bad Polaris belt. He and I went to the service manager and looked at the belt they took off. It appeared perfect to us! (I kept it as a backup). They then test drove my Razor and noted the Gates belt was less jerky. Then they test drove a new 900s with 2 miles on it and noted it was jerky like mine was before the belt change! They decided the "jerkiness" is a characteristic of the new 900s!! I paid for nothing but the filter and fluids. This is FYI. :rolleyes: