Putting tension on it helped me alot with that PI. I would tension it abunch, try milking it. Then I would let most of the tension out and try milking it again. After a few cycles, it worked, and I just used the regular sampson double braid directions.
I've done some used blaze and found that the original instructions were fine. a bit more work but i massaged, milked, bent and hit a bit more. i got there in the end just it wasn't as nice as new rope.