Any-hooooo .That got me to researching this threading. As I said a day or so ago, to make this work you will need to add or subtract an end when you go from one certain block to the other.
See where the black thread on shaft one is? That would be a place where you would have to add the extra thread.
These blocks are:
Now, I am pretty sure I will thread according to this kit, but who know how I will treadle it.
(Hopscotch Blacks Baby Blanket-Yarn Barn-KS. Just a satisfied customer. Not associated with the company.)