I thought I would make a change to KComm today so that the frequency display shows actual receive frequency when RIT is used, as the K3 itself does. While testing this, I found a bug in the K3 firmware. Although the K3 sends auto-information messages when the RIT control is changed, it does not send them when RIT is switched on and off or when the RIT offset is cleared by pressing CLR.
It is supposed to do so according to the programmer's reference manual. I thought I could check the K2 to see if it works as documented, but that would have been a lot of hassle.
I reported the problem to Wayne at Elecraft and he has said it will be fixed in the next beta version of the K3 firmware, so I'll suspend work on this update until the fix has been done.