Muffled bluetooth phone transmit audio

Hello
I have a 2019 tundra. The outgoing phone audio stank. Was very muffled.
Turned out there are two microphones. The one above the drivers head is probably used with only the driver in the truck. I narrowed it down and "HAND DRILLED" 2 1/16TH in holes into it (it had 2 too begin). The audio is now as clear as the phone by itself. I also increased the TX volume (which had very little effect prior).
Be CAREFUL AS IF YOU GO TO DEEP YOU'LL DAMAGE THE MICROPHONE, THUS THE DRILLING USING FINGERS AND A BRIGHT LIGHT

 

I would like to see any photos or video of the procedure or its results.