I have an Ariston Mixed Cooker, model CP 859 MT. The door no longer closes fully, there is a 1cm gap. We have removed the door and had a look at it, but cannot see any way of adjusting the hinges. They appear to be solid steel and are tucked away inside the door. Any help would be much appreciated, as we live in rural Western Australia and don't have much hope of finding an expert locally. Cheers Marg