I went in a 1700 mile trip to the Gaspe and at the end of the trip I felt some grinding and shaking under the sled. I thought maybe I was just grinding ice under the tunnel and it eventually went away. Got it home and looks like the right side of the track is all tore, the lugs are all gone and the tunnel protector is destroyed. Any ideas what can do this. The track only has 6k miles on it.