I have the same problem on my 420SEL. I end up using a real fine sewing needle to get the crud out.
What I am wondering, is what kind of fluid you are using. I am using orange stuff made by RainX. I don't know if my fluid is being heated too much, or if this is something that happens when using the orange RainX...but my little nozzles clog up frequently with crud. (and keeping a little tiny needle handy, w/o loosing it, is a pain)
"...rationality of thought imposes a limit on a person's concept of his relation to the cosmos." -Nash
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09 Jetta TDI