[Elecraft] verify my interpreting the K3's blocking-spec.

[jsodus at comcast.net]

Hello, 

George Cutsogeorge W2VJN wrote a book "Managing Interstation Interference". 
I have the 2nd edition and I believe there is a typo. 
The author states he used his Elecraft K3 for his work; I had emailed the author quite awhile ago about this matter but got no response. 

On pg 6 in para 1.3.2, W2VJN says at "... signal offset 20 kHz", he gets +5 dBm. 
However, on pg 8 in Fig 1, he wrote 2 kHz at the +5 dBm level, . 

I've read the K3 specs and t he way I interpret them, the typo is on pg 8 and should read 20 kHz. 
I'd like someone to verify I'm not going off in a wrong direction here. 

I'm giving a class on "dB uses" this month to our club and Figure 1 is in my presentation, so it needs to be correct. 
BTW, the specs for the K3, as applies to dB, are featured in my presentation. 
TIA for any replies. 
. 
73 Jerry KM3K