I'm facing this strange situation related to setting of my beosystem 3.

I have it setup with Beolab 7-1 (center), Beolab 2, beoalb 8000 as from speakers and Beolab 6000 as rear.
Recently I noticed that 6000 sound distorted. After taking a close look 6000 were due for re-foaming.
In short I have disconnected them from the system for about a week. After fixing woofers I connected lab 6000 to beosystem but cant get them to work!

Beosystem detects them in speaker types menu, however in speaker roles they show as NONE, Then I assign them role of rear speakers and try to store I get no confirmation. So when I come back to this menu they are shown as NONE.

In Adjustment Menu I have only these and can only change to SPEAKER 2 or 1
 DEFAULT VIDEO SPEAKER 3 
 DEFAULT AUDIO SPEAKER 3

Please help!

Below all SOUND settings of Beoystem 3

TV SETUP/OPTIONS/SOUND

SOUND SETUP

* ADJUSTMENT
       DEFAULT VIDEO SPEAKER 3 (Used to be 5)
       DEFAULT AUDIO SPEAKER 3 (Used to be 5)

* SPEAKER TYPES
        CENTRE 1 - Beolab 7-1       

        SPEAKERS

        Beolab 2
        Beolab 2 (grayed out/disabled)
        Beolab 8000
        NONE
        NONE
        Beolab 8000
        NONE
        NONE
        Beloab 6000  
        NONE
        NONE
        Beolab 6000

*TV SPEAKER ROLES
        SUBWOOFER
        SUBWOOFER
        LEFT FRONT
        NONE (grayed out/disabled)
        NONE (grayed out/disabled)
        RIGHT FRONT
        NONE (grayed out/disabled)
        NONE (grayed out/disabled)
        NONE (produce sound when selected)
        NONE (grayed out/disabled)
        NONE (produce sound when selected)
        NONE (grayed out/disabled)

*TV SPEAKER DISTANCE
        CENTRE
        LEFT FRONT
        RIGHT FRONT
        SUBWOOFER
*TV SPEAKRE LEVEL
        LEFT FRONT
        RIGHT FRONT

*SOUND SYSTEM

     INPUT FORMAT
     DOLBY DIGITAL 5.1

     OUTPUT FORMAT
     DOLBY DIGITAL
     SPEAKER 3