I was so pleased with this used machine, it started, ran and chewed through the white stuff like a champ. However tonight as I finished a slow pass through 24" of sugar snow, I had to turn it around without reversing as it was in a tight spot. Right afterward, the tracks stopped turning. The auger works fine, and the drive clutch lever still has tension in it when I squeeze it, but the tracks don't even try to turn. The tracks are not locked up, they will turn by hand. Is it the drive clutch cable, do you think? Or what? I hope I can fix it, another foot of snow on the way tomorrow!