[Elecraft] K3 and no front microphone working

[Ron Gould]

I have a K3 and MH2 as well as a Quiet Phone Plus.  The Quiet Phone Plus only works from the rear but not the front.  I have Heil Kenwood adaptor.  The MH2 does not work either.  Both cases not TX audio from front connector.  No Sub receiver installed.  Serial number in the 2700's.  I have selected FP.L for both and Bias for M2.  Neither works.  Advice appreciated.  I did submit inquiry to Elecraft but they are now closed.  Did I miss something?