alt st going to Left/center when alt pressed

[vga]

I have a 5.1 setup with a c24
when i press the alt mon on the c24 my feed goes to the left, and center feed. I have to go to the I/O and change the center feed to ch 3 right feed in order to get plain old stereo??
When i create a 5.1 master the stereo goes to the correct 1/3 feeds ??
Question
when I press the alt mon button should the c24 get the feed from ch 7/8 automatically,which is where it is on the db25 cable??

My first 8 outputs on the 192 are as follows
1-L
2-C
3-R
4-Ls
5-Rs
6- LFE
7-alt st L
8-alt st-R

[Lizardpoint]

It sounds like a routing problem within the C24.
Is there some kind of reset you can do ?
If the 5.1 didn't work I think that your cable was wrong and o/p's 2 & 3 were reversed.

When you press the alt mon button, whatever you were listening to, should be fed via o/p's 7 & 8 to you second set of speakers. (At least thats what happens on the old Control 24.

Cheers

Lizardpoint