[Elecraft] CM500 mic keeps cutting out midsentence

[Jeff Hall (W6UX)]

I'm having problems preventing my Yamaha CM500 boom mic from cutting out
intermittently while talking.  I have the following settings on my K3:

VOX Gain: 85
Anti-vox: 0
Mic delay: 0.90
Mic Gain: 30
Cmp: 25

The mic is routed to the K3 via a microHam MKII.

I have tried moving the mic to various positions but this doesn't help.  TX
cuts out every few words and this is very annoying! I have to raise my voice
above normal conversation levels to get it to turn the transmitter on.  I've
play around with various values, but I'm not finding a good combination.  Is
there another setting I have forgot to address? Maybe I've got a loose
connection in the mic itself? Not sure how to take this apart for
inspection.

Thanks for any any and all suggestions!

Jeff, W6UX