Ezibleed itself had a split in the hose where it joined the reseviour cap. I must have damaged it when I crammed it back in the box after the track day in November. I only had half a litre of fluid so once that was on the floor I was fooked. Didn't have time to investigate as needed to get showered and on the road.
Anyway, when I got back I bought 5 litres of fluid then hooked up the Ezibleed. This time spotted the tiny split, cut an inch of the hose off with a stanley knife put it back to together and bled the brakes fine.
Annoyed big time!