Got the engine running again in my project disco to find that the fuel pressure regulator is leaking. I spent a few frustrating hours changing it for a spare one I had and that's bloody well leaking too. They're both leaking from the small hole in part number 5 on the drawing below. Now I know you can buy the whole assembly and I will if I have to rather than risk changing in another spare in case that leaks too, but I wondered if part number 5 is available to buy separately? Nowt wrong with the rest of the assembly.