Does anyone know of any 'common' problems with the 08's that would cause fuel to leak from somewhere around the sending unit? My friend's 08 started leaking fuel after he filled it up and it was parked in my driveway, which had the truck at a nose-down angle.I turned it around and it stopped leaking. We got the bed unbolted today and propped up one side so I can actually see the top of the tank, but I can't tell where it's coming from exactly, other than something related to the sending unit due to the way diesel will 'creep'. Is there anything in particular I should be looking closely at?