Right AirPod (Gen 2) microphone not working
I've already replaced these 2nd Gen Airpods under warranty once for a microphone issue. Now I am experiencing it again with the replacement pair. I've routinely cleaned these per Apple instructions. I've updated all firmware and even reset the Airpods. I've discovered only the right microphone a persistent problem- resulting in a very low level and muddy sounding signal. It is not call dependent as I am consistently able to recreate the problem with Voice Memos.
There has been no water damage. I have gently cleaned all screens and still cannot get the microphone to work as it should. Thanks for any help you can offer.