Like Bill, I have a Crescendo also, it's a great airbrush, so great that I have a backup of the same one but this one has lasted over 15 years without any issues. To tell you the truth, the only time I thoroughly clean it is when I am ready to paint a body, other than that I just run lacquer thinner through it and just use it like that. If I am running any water based paint, then of course I thoroughly clean it!!!