No problem @roastincoffee, I like the technical things.
The game give you power numbers because you are telling it you have a unsupported trainer so that will give you Inaccurate power numbers. But the reason I say impossible is the moment you start riding and you turn the resistance knob you are changing the curve that Zwift think you are using.
I have been playing with spinning bikes and speed sensors, I installed a left stages crank arm.
But I think some of your speed sensor issues is because of the sensor orientation if you can get it in the hub you will get better results.