I also thought you might get tested for CF. The test is expensive and might not be covered but sounds like you should consider it. I had the test and mine came out negative. Has your pulmonologist considered putting you on Pulmozyme? It is helpful for those with CF that have very thick and difficult mucus. Some say it is not recommended for Non CF Bronchiectasis however. I asked my Pulmo about that and he said it was based on only one study and that they have found it helps some people with Non CF Bronchiectasis. It is very expensive and also may not get covered. I spend about one and a half hours on airway clearance a day and i think that is more than average. So 4 to 5 is a lot.