If it's a Chinon drive, you can just switch the original floppy button. If not, you can either file down or make your own button to fit through the opening in the A3000 front panel. The Chinon drive buttons for an A2000 will actually fit through the A3000 front hole unmodified. If you have a Panasonic, Mitsumi, Teac or Sony floppy then I don't know if you have to file down/modify the button.
