It's worth noting that each "garnish" has its own part number, and they are not interchangeable.* Before realizing this, I lost one, I believe by putting it in the wrong slot and having it blow away. Also, the other day I removed the crossbars and while putting the correct garnish in the correct slot, broke off part of a tab, resulting in the garnish not seating solidly. I may glue or tape it in, and will be looking at some sort of plug for the missing one. (NOT paying >$12 + S/H for a delicate little piece of plastic)
The locking covers for the crossbars need to be handled with a somewhat gentle touch, too. The round lock part popped out of one while I was trying to snap it in place by pounding with my fist. I don't possess Lenny-like strength (Mice and Men Lenny) or anything but I may have been a bit rough. (Perhaps being overconfident after so many successful unclippings/reclippings of the map light assembly to replace bulbs and install dashcam. Each time I'd thought something had to break, but it never did.)
*I almost needed reading glasses to make out the RH-RR, LH-RR, etc. markings on the undersides, but my eyes ain't what they used to be.