Greetings e/o - asking some advice on my first post. I am replacing the blades on my 2004 A4 Ultrasport (manufactured 12/2003). I ordered Bosch blades both 22" long (parts #3397118933) because the parts website says they are the right replacement parts. But my Audi owner's manual says the driver's side should be 21.65" and the passenger side 22.83". Why wouldn't the replacement set be these lengths...should I just install the two 22"? Any advice would be appreciated.