rooftop carrier

Missing molding cover for one of the roof rack locations. Does anyone that installed a rack have the molding covers available?

I can’t wait any longer for the lucid branded rooftop carrier because I’m moving and need the extra space while driving cross country. I see that Lucid tends to recommend Yakima for rooftop mounts, so I was thinking to get a 14L Yakima box and that should likely mount fine. Anyone have any...