John,

Never have had hands on with this module, but control 0 usually refers to MSB 0 and the value would be 001, 002,...
And, since control 32(LSB) is not mentioned, it must always be 000.
Now the voices are either just the number shown or need to add or subtract 1.

Now not knowing how Ketron thinks about this, they may be using Control 0 as LSB and just calling it by their own term.

So let's try the setting for "Rode Low" = 002 000 005.
Try this and see if you get the correct voice.
If it works, you now have the key.

Bill G