[Elecraft] Weak audio on 2nd RX

[Sigismonti Ronald]

I have installed my KRX3 and have been trying to learn to use it  
effectively, but seem to have something misadjusted somewhere.  When  
using diversity reception with a beverage on the main RX and a  
receive 4-Square on the second RX using the BNC input, the audio in  
my left ear (the Main RX) is much louder than the audio from the  
right ear.  I am not aware of any hearing deficiency in either ear  
and I have to turn the volume on the second RX up considerably higher  
than the main RX to have them approach parity.  Is this normal?

I also see that when I attempt to enable the 2nd RX to work on a  
different band than the main RX, I cannot set it.  Is there still a  
firmware upgrade required before this feature will become active?

Thanks for any comments,
de Sig, N3RS