I'm down in Plymouth.
I have been doing some research and i found out that the digifant runs a higher pressure than the K jet and the K jet has a sort of booster pump within the tank to prime the fuel pump, so what i have found done is found one, And also i managed to come across a complete k jet wiring loom.
The plan is if the pump doesn't sort out the priming problem i am going to rip out the old crappy loom and replace it with a proper one.