I have just recognized that Aluma8300+FW8G+AO-8 moves very nice. It does under the latest camera firmware(r20) and MaxIm DL 6.21. The camera works well under DL imaging. Filter type is DL imaging+AO. The AO-8 is specified as sensor1/2 in the small setting window. Perhaps, the sensor type may comes from camera's two I2C ports. At first, I don't know which one is sensor1/2. But when light image can not be taken and MaxIm DL tells error msg; meaning proper driver not prepared,,then I change the sensor number. After that all works good. Anyway, finally I get it. Thanks so much for efforts of Diffraction stuff.