I have been going at this van like a bull in a china shop trying to keep my mind occupied for a complete week now since losing my rotty, Chaos.
That seems to have been my problem, I made a school boy error and didn't even spot it untill today.
I had fitted the rear callipers upside down to the bleed nipple was at the bottom, I know the correct way they shpuld be fitted, just with all the rushing I didn't once notice!
Propper stupid thing to do but, we're all humen eh.
All working now.