Well, our spring has run the course of it's life and no longer holds the lid down securely. Thus the whistle no longer works properly.
The problem with this for us is that the whistle is a harmonica sound. And as I have found in my searches for a replacement, that is rare. I looked at other kettles of similar design and I cannot attach our whistle to them. I've searched for other harmonica whistle (or train whistle) teapots and they're all rather expensive and I don't like the designs.
Any direction or information you lovely tea-folk can provide would be greatly appreciated.