[Elecraft] New problem switching frequencies and modes with K3 FW 4.05

[Dave Perry N4QS]

My K3 (SN 3132) has been working happily in sync with DX4WIN and N1MM for over a year now.  Normally, when I double click on a spot within the DX spot window of DX4WIN, the K3 immediately changes to the correct spot frequency and mode.  Same goes with N1MM.

Just a few days ago I noticed that the K3 is not always changing to the correct frequency.  The problem appears to occur when a spot causes a change in both frequency and mode.  For example, if VFO A is set on 14.008.00 CW-R and I see a SSB spot for 14200.00, when I double click on the spot, the K3 changes to 14.199.42 instead of 14.200.00.  Then if I click on a spot to go back to 14.008.00 the K3 changes to 14.008.58.  In both instances I have to double click on the spot a second time to get it to change to the correct frequency.  Note that the difference is +/- 0.58 kHz.  The problem also occurs when switching from SSB to RTTY.  It also seems to be occurring using both normal CW and CW-R.

Last week I loaded the new 4.05 firmware.  I am now wondering is this is a problem with the firmware.  Or have I somehow changed a setting?  The K3 worked perfectly for over a year.  Something has changed.  Any help would be appreciated.  

Dave, N4QS