I spoke to my usual guy at the dealership yesterday about the screens. He contacted the factory and got back to me straight away. All the screens are fitted using the rails and they are all interchangeable. He confirmed the larger screen isn't yet available. Though Morgan will be suppling my car with the 2 smaller perspex ones and sending me the larger one at a later date. I'll only be charged for the larger one, the small ones will be FOC.