Do Sportsman belts typically break or start slipping when they're beginning to fail? Or could it be either? I just got a great deal on an '08 Sportsman 500 HO EFI with about 1300 miles on it. Haven't even take it out for a long ride yet. Should I replace the belt? Inspect the belt? Can I expect some warning when the belt is failing, or will it just break in the worst possible location?