None of us is likely to proclaim ourselves "cured" because MAC is everywhere, and with bronchiectasis we are always susceptible. But... a number of, including me, have kept MAC at bay for significant time by nabbing 7% saline and doing airway clearance.
Also, a good regimen of probiotics, used daily kept my diarrhea controlled. Fatigue was the biggest problem. And the cough went away!
Have you tried neb plus airway clearance?
Sue