Airway clearance takes a l o o n g time to exact. It's possible that you have pockets of bronchiectasis where it's difficult to clear. Understanding where those are might help you target those areas through specific postural drainage. Pulmonary RT told me I needed to clear until I was "dry". Really hard and super time consuming. The next best thing for me is to clear until the secretions show scant pale yellow, or even better clear. It keeps cough to a minimum but for very touchy times (weddings, funerals etc) I'll take a puff of albuterol and suppressant tessalon perels.

I agree with Sue about LMP -- one person's journey that worked for her. One size does not fit all. One of the biggest things that bothers me is that is zero room for discussion.