First of all, I found answer to 1 thing without asking: why does the airflow dissapear from the AC after awhile, answer, it freezes up! - out here where it's +40 C or more and 90 humidity, guess it's not a surprise!

Now the next silly question;

How on earth do you adjust the angle of the screen washer jets (or can't you?). Mine seem to point 1" from bottom of screen and no obvious way to move them!