Hello, new to forum and to snowmobiling. I received a 1971 Mercury 200 from a friend last winter and have beening getting it fixed up. Every thing seems to work great on the old machine except I need a new track. Can anyone point me in the correct direction for finding a new track? I know the track is 15 1/2" wide, but i don't know the length. Can tracks be repair? Any help would be greatly appreciated. Thanks, Matt