Another thing, when it was tested the rubber bulb wasn't used to draw air in, the car was running for around 4-5 mins with the tester on it. Now I asked about the rubber bulb and my mate said he's never been taught to use one at work, I've had a little google and I have seen other people saying you can just let the gasses pressurise the block tester rather than drawing it through but I just want to check is the way the test was carried out correct, before I cross head gasket out of my mind. Cheers