So, can anyone help me understand the use of these buttons in my new truck better? I am aware of how a LSD works, but am unsure of why/when you'd want to turn it off. it seems like if you are stuck it would help out. is it better to drive with it off? what about when towing. the owners manual is not very helpful in this regard. Also, the other button, down low on the left, RSCA off, or something like that. again, the owners manual not so helpful. I don't see any lights that tell me if these functions are on and off. Any clues would help out.