Hello Buddy,
This may not be the answer to your problem but the first question that comes to my mind is: are you playing the correct chords when using the Automatic Accompaniment?
I ask this because most keyboards, including the KN7, use what is known as "keyboard chords". As a pianist, I tend to use 'piano chords' which affects the chord I am using in much the same way you are describing. If you ARE using piano chords, the answer is to go to the Menu and make sure the 'ON BASS' is switched ON. (highlighted) The keyboard will then play any chord you use correctly.
I hope this helps - enjoy your KN7, it is still the 'King' of the keyboards.
Audrey
[This message has been edited by Audrey Turner (edited 03-10-2009).]