[Elecraft] K3: An rather unusual issue

[Richard]

A fellow ham has a problem withhis K3, which works flawlwssly in SSB but 
as soon as he switches to CW, the TX-frequency jumps up by 3 kHz and 
stays there.
No RIT/XIT engaged. He was able to check with another ham and the TX was 
actually 3 kHz higher than the RX.

This is absolutely new to me... Anyone had this kind of issue?

Thanks and vy 73

Richard -- HB9ANM