That didn't take long. I am lucky if I have 10 miles on this thing since purchase in August. That's a whole different story on why I wasn't driving it and will be settled in a court, but that's not the problem.
So the rear tank doesn't fill because it likely has the midship filler neck...
My ultra-reliable 1992 F250 started as usual yesterday morning, but after about 20 seconds abruptly died out (as if a light switch was flicked off). There was no sputtering, no coughing, just a short cutoff. Soon thereafter I could clearly smell what seemed to be overheated wiring in the cab...