It works. Could have been anything the first time around. I completely disassembled and reassembled. I suspect it was the switching jack (or lack thereof, duh) that caused my initial problem. Now, there is just one immediate kink that I would like to describe that I haven't really seen discussed.
Early on, before I had a solid signal path I noticed oscilations when I turned the gain past 8 on the right channel and 7 on the left when using the microphone input. After reworking the the unit I no longer have audible oscilations, but both sides, respectively, still misbehave at these gain stages when set to microphone. My routing mixer shows a solid spike its output level meter (meaning the level doesn't change) as if the G9 unit is generating a constant DC voltage at output (I haven't tested for this). There is still an audible mic signal, but it is greatly diminished vs what the signal is at lower gain settings. I do not have these problems when using the instrument input.
Any ideas?
Tim