Well thanks guys, I'll get under there and start checking everything. I think I'll go ahead and replace that return line while i'm at it. I have my fuel pressure set at 13 psi, I think I have plenty to start, it just needs to reprime the injector lines.

 

I had the exact same problem. Had a leak letting the fuel drain out of the line if the truck sat for a day or two. Run it then look for the wet spot.