Hi - Just moved into a house with a built in gas cooker. Was working fine until last week. It won't ignite and the (digital) clock is dead. The hob which is separate is working fine but there doesn't seem to be any gas getting into the cooker at all. I've logged a call with the company who said they would get an engineer to contact us. does anyone have any ideas in the meantime?? I am supposed to be cooking a roast dinner for the entire family next weekend....