Kim, were you still using the Recording outputs in your live rig?
No. I simply used them here at home to get the speaker sim and connect to and use my puter, software, and nearfield monitors. Test #2 required the Stage Outs to be used. These went into the Quadtube power section and using those speakers at a considerably higher volume.
Update#3:
Noise Mod is confirmed, and R913 has been replaced.
Noise Gate Chatter-Shutter-Upper R611 has also been replaced.
I have 195.2 Vdc at HV test point.
And the tubes:
Tube Town 12ax7 Classic in V1
JJ ECC83S in V2
Both pass the "microphonic pencil tap test" easily.
I'm satisfied here. Next rehearsal I'll bring the other guitar and either verify or eliminate that part of the equation.