I don't nebulize albuterol, only 7% saline, but I was having trouble emptying the reservoir. I have found it helps to keep the neb cup tipped up, possibly keeping saliva from running into the apparatus. If you aren't using saline, you might want to talk with your doctor about it. It's a first line of defense for most of us, loosens things up and helps create a toxic environment for the bugs. My first diagnosis treatment was H-influenza, too, then the cultures cam back with MAC. That's almost a year ago, and I'm now in a clinical trial at OHSU for clofazamine.
Wishing you the best.
Anna