K3 band switch problems?

[Ross Primrose N4RP]

My new this year K3 is exhibiting some strange behavior of the band
switch in the down direction... Sometimes it'll beep, and not change
bands, sometimes it'll change mode rather than band, occasionally it'll
actually do what it's supposed to do...

Ideas?

73, Ross N4RP

--
FCC Section 97.313(a) “At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.”

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