[Elecraft] KX3 - Low sensitivity on 12M band

[Bert]

After putting up a new antenna for the WARC bands, I noticed that the 
signals on the 12M band
on the KX3 seemed kind of muted and decided to check the sensitivity 
with the signal generator.

Pre-amp on the KX3 was set to 20 dB for S9 with a signal of -73 dBm on 
all bands. All bands seem
to be OK except 12M where a signal of -63 dBm was needed to get S9 on 
the S-meter.

Any ideas or suggestions? Thanks!

73 Bert VE3NR