My fix to the old mike didn't work and I ended up ordering one from Mike Beier (advertised on
http://www.segelflug.de/) and finally got a chance to test fly it on a long flight. I am very happy to report it worked perfectly. As part of my 6 hour flight I talked to three different approach controllers as well as many other gliders and everyone reported the quality of audio to be excellent. I highly recommend these.
Now the interesting question is why we don't see more gliders use the panel mounted mikes? It seems to be the perfect solution given there is no clutter with the boom mike and you just speak normally to your panel. No more bending your neck to get close to the mike!
MA