I swapped my seats a few years ago, as for the uneven wear, I think it is because the driver has the steering wheel to pull himself into the truck, so less sliding across the seat. Just a thought. Swapping them was easy, and while they are out, take a sledge hammer and bang that rear lip flush with the seat so you can actually reach under the seat from the rear. I keep ice scraper, first aid kit etc under there Also allows you to easily disconnect the TOD computer, and connect it back if you are going to drive on snowy roads and want TOD back on.