FYI, I also had heart palpitations while on Miracle-Mineral-Supplement . I found that to be a reflux problem where my esophagus was irritated and put pressure on my chest (too much detox I guess)
I solved it with 1 tablespoon of fresh ginger juice each morning for 3 weeks. Of course I had a cardiogram before (just in case).
Maybe you knew this already, but then again, maybe this could help you.
Good luck and thanks for the good tests and knowledge you bring here. I have access to a lab as well, so if you need any help I'm here.