Loveall:

You are right,  there are certainly some unanswered questions left from my experiment.  Your third point "Then open boil half of it for 4 hours adding back water to keep volumes equal. " is just what I did except that since the closed pot builds up pressure I used the heavy kitchenware , also I had an arduino rigged with a thermister to control the hotplate temp. .

As for your second point, most experienced extractors will agree with you but my experiment does not. It was globally understood that the sun goes around the earth and the guy that said different got in big trouble, maybe because he delivered the news like a dick.   I don't claim that my results are any definitive answer, just that I was reasonably careful. My hope is that others build on this for all of our benefit and also to make my little contribution to things....

I used Phalaris for my experiment, maybe someone with MHRB or Acacia will weigh in with results for those?

In the mean time:

       "Keep a lid on it"