Ok, now I feel stupid, lol. After looking at the board a little more I realized it was a simple mistake I made. In the pdf file it shows the RX Audio wire going to the mic connector soldered to the center pin closest to the edge of the board. On the adapter I have, because it's all surface mount, there is a connection on both sides of the connector, so I soldered to the outside one like the picture showed. Unfortunately, there's really no connection there, it's just a solder pad to hold down that side of the connector. So after resoldering the wire to the inside middle connection all seems to be well. Jeff WQEX694 KB1SPH