Alesis Andromeda A6

Hi I have a problem with my sub oscillators volumes changing on different voices . If you are reading this post you could try and replicate this on your A6 by initialising a patch in the user bank ,setting the voice alocation to rotation (very important ) . bypassing the filters . setting a fast attack and highest sustain amp envelope with no release turn osc 2 volume off . have osc 1 volume at 50 %. turn off osc 1's wave and bring in the osc 1 sub oscillator untill just audible . Now press a key to cycle through the 16 voices you should notice the volume changing ? You can monitor which voice is doing what from the Global> voxmon page . Please if you have tried this procedure can you let me know if your A6 behaves the same as mine ? Thanks for your time 
Dave