Maybe I should clarify my "cracklings" Most people with lung diesease will have cracklings heard only with a stethoscope, very common. Which I have always had in the base of my lungs, but only with stethoscope listening, I have never felt it just with an inhale. The crackling I am complaining about ---- I'm able to clear with a "cough attack" which will allow me to rid my lungs of clear mucus. But it would return at least twice daily, that was not normal for me, I never felt rumbling before. It was driving me crazy because I'm constantly anticipating the next rumble and cough attacks are not pleasant. The past 3 days I have had less mucus and have not felt the crackling, hence I'm able to clear my lungs with just a normal throat clear (like a post nasal drip type feeling). So I'm not sure if any of this makes sense, everyones lung disease is different.