I have 2 airwash brackets, one on each side of the glass. One is perpendicular to the glass and the other is about and 60 degree angle to the glass. What is the correct positioning for these? I don’t see them anywhere in the manual. Perhaps I have an Advance-1 manual and they didn’t update it for the Advance-1? Seems the one on the left that is perpenticular, the glass doesn't stay as clean as the other.