EDIT: I'm really sorry, I did not know that calibre can only read and dump the smaller AZW3 version instead of the biggest azw6 one (200MB) I had to use that script to extract it: https://ouo.io/3iqU2v
It's actually the original file... EDIT: Seem that calibre is unable to read the "azw.res" version (200MB) and dumped the .azw version (76MB) instead. I had to use a python script to extract the bigger one and I will update that galery.