Installed a 3rd party set of roof rails. Should I be worried about the trim?

Just installed a set of these: https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/163132586078

So it installs a bit different than the oem ones, as in the oem ones cover the entire piece of trim that you have to remove to install.

With these rails I had to cut two smaller pieces of trim to fit in between the two center cut outs in the rails.

Needless to say after the install I'm not super confident in the trim that remains. Water could easily get under where the rails are mounted and into the valley the rails sit in.

With that said, after removing the trim pieces I'm not completely confident that they would hold water out of these valleys completely right from factory either.

Is this something to be concerned with? I think you can think of the valley as a exterior piece, it won't allow water to get into the vehicle, and it's all painted and whatnot in there. Anyone have any experience installing roof rails?