[Elecraft] K3 audio problem

[k7ca at infowest.com]

Hello,
  Last night I was transmitting on 160m and using stereo headphones listening with diversity RX and heard some unusual clicking coming from the K3 when transmitting.  I pulled the diversity RX antenna that was plugged into the 2nd RX antenna port with no change.  I pulled the RX antenna that was plugged into the main RX ANT IN port on the KXV3 and the clicking stopped.  This told me I had too much RF coming in on my beverage antenna when transmitting.  So I put the 2nd RX antenna back on but now there was no audio output from the KRX3 sub receiver.  I'm using the sub audio knob as the balance control between the main and sub receivers.  When the sub receiver is on and the pot is counterclockwise I get audio from the main RX in the left ear.  But when clockwise there is no output from either side.  I did have stereo speakers plugged into the external speaker port in the rear of the K3 and the spkrs were set to 2 when the problem started.  Also I haven't done the AF mod yet.  W
 hen I turn off the sub receiver, I get audio out of both sides.  Does anyone have an idea of what might have happened?  I did fix the high RF level coming from the beverage antenna by putting back to back diodes from the center pin of the coax to ground.  Now I can transmit with no clicking coming from the K3.  However, it would be nice to get the diversity reception back. Al CE1/K7CA