The 1/4th inch difference is possibly from the notorious "Ranger lean"
Due to the gas tank, battery and driver all being on the same side of the truck, almost every ranger starts leaning to the left. The thing about leaf spring suspensions though, as the suspension compresses the axle moves back. It could be as simple as your driver's side leaf is worn out causing the axle to sit a little bit further back.
I had that issue with my truck, I bought a used passenger side leaf and installed it in place of the driver's leaf, problem solved.
You could have a different issue, but it's worth taking some measurements to check.