Hit a bone hidden in snow... Afterwards I looked for damage and didn't see anything.. I started up again and found that the locking of drive (movement) wouldn't work. The augers worked correctly and I could hear the snap as it locked, but the drive never did. The drive worked, but wouldn't allow me to lock-in the drive so I could use one hand on the auger control (right hand) and use my left for the directional shute control.