so the story is i just bought this truck and it ran like crap. so it's always had high fuel pressure. well, i found out the reason for the high fuel pressure and after replacing both return and feed hoses going to the fuel pump/sending unit assembly, and messing with it for an hour or so, i decided to pull the sending unit assembly and found the "straw" for the return goes all the way to the bottom of the tank. well, i guess the bottom of the tank is bowed in a little bit from previous owner wheeling it, or what not, causing the return to be blocked from the tank. after some slight cutting of the return "straw", fuel pressure is normal.