For the end of 19 after the right dropping elbow I grab the back of the neck at the base of the skull and allow my left hand to slide under the right shoulder. Then pushing down and to my left with my right hand and up with my left it turns the attacker over and drops them on their back. To preserve the original technique I do not alter it in 6 kata.
Interesting variation. If I'm reading it right, it sounds similar to 14Kempos version.
Side note - glad to be back, my computer crashed and I just got it back.
Welcome back!