Damn thing, refitted and bled the system, easy enough to do just takes longer than doing a car, slave was stuck open again, made me question everything about the adapter/flywheel measurements, not looking forward to taking it all apart again.
Went to Schofields at Glossop yesterday (open on a Saturday!) as only an hour from me and grabbed a new slave cylinder and accelerator cable for a manual van while I was there.
Didn't realise the slave pipe fitting is a different size, tried to take it off nicely but ended up belting a 12mm spline socket onto it, made the pipe up and refitted with mole grips, works fine for an ugly Sunday fix!
So bled it up in 2 minutes as had clamped the hose under the dash and it works, drove the van forward and back today
Still loads to do...