[Elecraft] Audio blast from the past

[Merv Schweigert]

Just had one of the audio blasts from the past so to speak,
Using the latest 3.63, 
was changing modes from RTTY to CW and as soon as
I pressed the Mode switch and the K3 went into full audio
loud screech.  Happy it was on speaker and not headphones
as it was eardrum busting.  Hitting the mode switch again
did nothing at first, pressed it again and it stopped.
Of course I cannot get it to repeat.

Also notice that I have a "dead" spot while tuning the shift
control.   If the width is set to .05 and tuning the width control
to center a signal in the passband,  when I tune through .63
the receiver goes almost dead,  one click either way, IE: .64
or .62 and all is back to normal.  Changed between IIR and FIR
and same results at .63 shift.  It may be at other widths also just
not as noticable.

Another one that may  have always been there and I never noticed ,
when engaging the NB control the signals drop noticably, my settings
are T1-4 and IF Narrow -4  when I press NB to remove power line
noise the signal also drops in strength,  as I say that may be "normal"
and I have not noticed it before.

73 Merv KH7C