[Elecraft] Problem setting K2/100 CW filter adjustment

[k8rs]

When using the Spectrogram CW Filter adjustment system described by N0SS, I am having trouble getting my K2 to remember my BFO adjustment.  For example, my FIL3 which I set to 400 Hz is not centered on my 650 Hz marker.  If I tap Band-, I get "bf3 074". I move the BFO to center the filer and get "bf3 076".  Everything looks is centered like I want.  
                              BUT when I tap XFil, to save this new setting and move to FIL4, my K2 does not enter my new setting for FIL3 into memory.  When I review the four filter settings, FIL3 still appears to be too low and if I go through the CAL FIL sequence again, I get the old BFO setting of "bf3 074".
                            What am I missing here?  And how do I get the K2 to save my adjustment?  Don's instructions are pretty clear, but they are not working for me.
                                  Roger K8RS K2/100 #3478