[Elecraft] K3 Error 6 when changing filters then xmitting

[W0MU Mike Fatchett]

This is easily repeatable on CW.

I have the 2.8  in slot 4 and a 400 hz filter in slot 2.

If I turn the bw down into the 400hz slot 2 position and Xmit.  The amp 
will fault out with an error 6.

I noticed this in the RTTY contest too but never figured it out.

I wonder if I should try a transmit recalibrate?  I just upgraded the FW 
on my K3, P3, KAT500 and KPA500 to the latest.

-- 
Mike W0MU