[ddots-l] Strange MIDI problem

Guys,
        I have an old Pevey PC1600X which is a box with 16 MIDI faders.
For some reason, when I move fader 1, I get no MIDI data sent to SONAR.
I have enough eye sight to know the following:
1.  when I move fader 1, the appropriate MIDI IN light glows on my MIDI
interface just the way it does when I throw all the other faders.
2.  I get controler events in the event view when I throw all the other
faders.
3.  I get audible changes where appropriate when I throw all the other
faders except 1.
4.  I can see the indicator on the Pevey move when I throw fader 1.  I'm
not inclined to think the fader is broken.  

        I used to remember a MIDI matrix in old versions of Cakewalk.
Is it possible that somehow I'm not sending on channel 1?  What makes me
think this is that when I set my MIDI  IN port to port 3, channel 1, I'm
not able to record with any of my faders.  I've closed and reopened
Sonar several times, turned my MIDI interface on and off with no luck.  
Any help?
Kevin

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