@bjmsam I am a little confused, because in my cable the wiring is different:
Mini USB plug
1: +5V
4+5: 330kΩ resistor
5: GND
6: Mic right
7: Mic left
8: Mic gnd
You have the Mic right on pin 7(instead 6), Mic left on pin 9 (instead 7), and the resistor is between 2 and 4 (instead 4 and 5).
Does it really work, did you check everything?
Mini USB plug
1: +5V
4+5: 330kΩ resistor
5: GND
6: Mic right
7: Mic left
8: Mic gnd
You have the Mic right on pin 7(instead 6), Mic left on pin 9 (instead 7), and the resistor is between 2 and 4 (instead 4 and 5).
Does it really work, did you check everything?