[Elecraft] K-3 Power Output Question

[RLVZ at aol.com]

Hi Guys,
 
I was transmitting AFSK-A tonight with the K-3 operating  at 30 watts 
output and driving my amplifier and all was working well.   I then 
adjusted the K-3's power output control while transmitting and  the K-3 
power did adjust.  This was the first time I ever adjusted  the   K-3 output 
power while transmitting.  Is that a  problem?  Now regardless what I do, the 
K-3's  output power is only 40% of what the 
K-3's digital readout indicates.  Such as: when the  K-3 digital readout 
says the power is set to 100 watts the K-3's  RF output indicator and my 
external wattmeter both show 40 watts  output.  And when the K-3 digital readout 
indicates power is set  for 50 watts the K-3's RF wattmeter and my external 
watmeter both  indicate only 20 watts.
 
By the way, when I go to CW mode all is well and the K-3 will  put out it's 
usual 100 watts.
 
Firmware Version is 3.68
 
Right now the maximum power output from my K-3 in AFSK-A Mode  is 40 watts. 
 Any idea how I can correct this  problem?  
 
Thanks-
 
Dick- K9OM