the idea is that when everything gets loaded while underway, it all becomes straight or neutral. so you would set the toe in or out a small amount depending upon what prop rotation you run? prop rotation will determine if you need to set the toe in or out.

Yep, thats what I have always heard to.

I got a whole lot of stainless holding them right where they are. Yea there are a few joints here and there but I can't imagine a lot of flex in the rigging as rigged from the factory.

if you dont think your steering has any change loaded then at rest, dont worry about it. i am just trying to help by letting those who asked the correct way to set it up.

Understand.

I would set it to zero run it then experiment. I spin in and tow them out 1/8"

Ok turning props in my nose cones are closer than my prop shafts since turning in forces props out

it is easier to think of it as a single engine, most singles are right handed, a rh prop rotation allows the boat to turn right easier than left. when turning right the point of the gearcase moves to the left. and vise versa for a left hand. so when you spin the props in, meaning your right hand rotation is in on the port side, when loaded, it would be pulling the point of the gearcase outward, therefore you would want to set them toed in a tic at rest so when loaded they are "neutral, zero, or straight", whatever word makes sense. when spinning out the opposite would be true.

Rigging my hunk of crap real soon , curious , how do we measure this ?

Your set up is correct but the force you are thinking about is pulling the prop/shaft in thus pushing the nose cones out to a zero.
Turning in the props are trying to go in. Turning out they will try and walk outward.