@equanimous You might experiment with 7%/Aerobika exclusively and see how that goes. Your vest will be on stand by! Since bronchiectasis is a life long chronic condition, requiring daily management, trying different clearance tactics is completely reasonable and often necessary. Recently, as @sueinmn mentioned, I take NAC and mucinex together, which seems more helpful than NAC alone.

Before I became knowledgeable about lung clearance, I used .09% saline and acapella, which I am convinced contributed to frequent infections due to incomplete clearing. The bottom line to figure out a routine which results in near complete clearance. BTW, I experimented with many different clearance techniques, hours spent on YouTube videos and BE Toolbox site, taking years to figure out what worked for me. Fortunately, I found this site of kindred spirits!