[Elecraft] Problems because of filter switch during CW operation K2

[Renardy, Martin]

Dear KW2 CW operators,

yesterday evening I was running into a problem during CW operation with
the K2. I called
CQ using the 1.5 KHz CW filter on 20m and got response from a couple of
US stations. 
The signals have been quite weak ( RST 33 ), but I have managed to copy
a call sign and 
to give answer.

Because of sudden QRM I switched to the 700 Hz filter but lost the
signal. I have had big 
difficulties to "find" the signal of the US station within the 700 Hz
filter. So I switched back 
to the 1.5 KHz filter and lived with the QRM.

How can I align the CW filtes, so that I can switch to the narrow CW
filters without 
losing the signal?

By the way: It was very impressive again, how powerful CW is under
difficult conditions!

Regards

Martin, DL6KMR