[Elecraft] K3 can't go to USB

[John Gaynard]

I normally operate CW.  I recently installed the CW rise time mod, the AGC
mod, the ALC mod for the PW-1, the KXV3 option.  The firmware is at 2.38.  I
tried to go to SSB on 20m last night and it will only find LSB now.  Any
thoughts??  I sent a note to support but haven't heard anything yet.  I
thought I'd try the list.  I can't recall seeing any emails regarding this
particular error.  Maybe I'm doing something wrong but I know that I have
used the K3 on 20m SSB many times, and did nothing out of the ordinary to do
so.  Is this a firmware quirk??

John K8WDN