[Elecraft] Working Split with K3S

[Amateur Radio Operator N5GE]

I'm trying to set-up working Split Folowing Fred Cady's K3s manua land
I'm having trouble setting it up on 17m.  I have it setup for 20m and
it works very well.  I can hear the the audio from the sub rx in
pileups-ups and it works great!

On 17m I followed the instructions, and I can hear the audio from the
main RX in my left ear, but I cannot hear the audio from the sub RX in
my right ear, but I can see that the VFO's are in split mode by
looking at the P3's display.

What am I missing here?

Any advice is appreciated.

Thanks,

ARS N5GE