"In order to remove the roof rails, you must first unscrew the rear cap. Once this is done you will need to grab this rear cap and carefully snap it off."
Sorry to be such a dunce, but can you describe in more detail what "rear cap" you are referring to, and how to unscrew it? I took a look at my RX330 cross beams and it wasn't clear to me. I want to remove them to reduce wind noise & drag, and make the car easier to wash.
Thanks.
Jim