Steady pull left?

[Mr Handy]

So my truck has pulled left sense I have had it. I figured it just needed an alignment.
so new spindles, ball joints, wheel tires and alignment have come and gone and the truck still pulls left. I got fed up with finding a shop that would work with me on the alignment so I read every thread I could find on the subject and I bought a caster camber gauge and started to work.
I have my camber set to -1* caster is right around +1* and toe is +1/8"
I thought maybe the steering box was off center and pulling me left. I measured the tie rods across from one side to the other thinking the linkage should be symmetrical, adjusting the tie rods to center each simply turned the wheel further left... I made sure the toe and camber remained consistent which they did.
So I am lost. not sure where to look next. I did some checking to see if the rear end was cocked, but it seems to measure straight.

When I let go of the wheel it immediately goes left, it does not wander slowly, it goes left sharply as if something is pulling it...
what should I check next? LCA? cross member cocked? there should be some way to get the thing to track straight down the road.