Ok. Now I'm stumped too. Have you tried a calcium/magnesium supplement? They both have relaxing effects on your intestines. That may help. Sounds like you are eating great! You are a very dedicated woman...good job! I don't know if I could do it.
Anyway, look into the calmag thing. See if that helps. It REALLY helped to calm my tummy down! I take it at night, so while I'm sleeping, my intestines are relaxed and calm for in the AM. It usually helps me have a BM too.