Thanks Bruce, its always good to read as much information possible related to airbrushing if you want to create outstnading finishes in your models.
I have being using airbrush before we had internet......🙄 and I learned the hard way...try and error until I got the hang of it.
For me the main concern is to have a good paint/thinner ratio.
Too much paint is what will cloge you tip and too much thinner will give you the runs.
This is my favorite thinner, Tamiya X20-A.