Got the engine to start and idle in "limp" mode. I disabled the ICV, no ECM, no feedback pot. Just the FP relay and the A/C plug-in relays. Adjusted the A/F ratio with the 3mm tower screw. At first, I dropped the sensor plate. Slight improvement, but as I continued with the adjustments run got worse. Reset the tower screw to where I began. Backed the plate adjustment 1/8 turn. Ran a little better. Kept backing out 1/8 turn and restart the engine. Finally got about a 900 RPM idle.

The engine runs smoothly and even. Let the engine reach full operating temperature and I get a good hot start. What I'm finding, is that I can adjust the A/F some more, and the RPMs will continue to increase.

I did find another video inline discussing the proper resting point of the sensor plate. There is a steel pin that sets the high point of the plate at rest. The pin was set so that the bottom plane of the SP is dead even with the bottom edge of the air inlet. The SP on the unit I have in hand sets even with the line of the inlet funnel and the throat where the inlet diameter matches the SP.

I believe that adjustment is what Dave Kost was leading me to.

Now, the video I found was for a v8 engine. So, are the SP settings the same between the 6s and the v8?