I had to polish with emery cloth to make it fit my Miyazawa flute.
It takes a little practice of the wind technique to play all the notes, and after a few hours you have learned to get a beautiful sound, and have full control over all the notes.
Since the flute is designed for horizontal position, it is best for fingering to tilt the flute about 20 degrees to the right from vertical position, then the fingering will be comfortable.