Made this sequence to help me decode this thread. Don't know if it helps anyone yet, not even sure it helps myself. Anyway here it is.
I did not have the tools to make the line appear in the exact same place in all images. My idea was to make what I beleive is the "turned shoulder plane line".
NOW I will go on with the reading.
Fantastic work Metallion!
And for those who still believe that this is a Zero Shift variation...