Yes the fuel breather was open a few turns.
As I said it runs like a dream now so I don't know if it was a case of possible chunk still in the fuel lines from the external tank or something else but im happy with it now. I had to double and triple check the fuel tank as I know its a small tinnie but im not used to going out on a boat being so cheap, for those in Sydney I put the boat in at the old flower power boat ramp on the georges river and went down stream to tom uglys bridge and back to flower power on half a tank so that's basically 12 ltrs used.. my last boat would of used about 200 ltrs for the same trip.. just in time to sell it all shortly (only had the boat a few weeks and already going up for sale shortly).