Hello, I am in the long process of getting dx for MAC. All symptoms and CAT support MAC dx but no pos sputum as of yet. However, I can give you a suggestion re the Diverticulitis. I suffered for years with it, and each bout led to another round of antibiotics. I was better during antibiotic treatment but then two weeks later the Gastritis returned with a vengeance. After two years of conventional treatment and constant pain I began an alternative treatment of my own out of sheer desperation. I was tired of living on librax, tylenol and ibuprofen. I started to follow the plant paradox food plan by Dr Gundry. it takes out not just food with gluten but also any food with lectins, gluten is only one type of lectin, there are many more. It took about 6 months to get clear relief and a year to be free of pain. however, 3 years down the road, I am free of discomfort and can even have a piece of cake or pizza once in a while and not be in distress. Good luck on your journey.