Im getting ready to throw a parts cannon at it. Still cannot for the life of me get the disco running. New lift pump fitted, fitted a "boost pin" and followed all instructions as to not mess this up.
I have noticed today however that the fuel filter bleed screw didnt go "tight" today so removed the screw and it was full of thread swarf - so used threadsealant on this hoping that this is my actual issue and is drawing in air from here
But im pretty much out of ideas now without throwing the parts cannon at it.