I had the same problem with my 2020 Ascent. when I called Weather tech, they said I wouuld have to trim the extra piece off. I cut the cargo liner just pat the rib on the right side so I had a lip like teh rest of teh liner. It fits pretty good like that.So, I have had weathertech cargo liners before. Nice fit.
i ordered one for the rear with 3rd row flat. I dont like the OEM parts- we do muddy, wet, icy things and I want a full cover, no gaps.
the liner arrives: not really fitting. Flap on the edit: right,( not left) rear over stereo component. I am supposed to cut it?? Then the lip is not as high??
i am super disappointed.
anyone else have suggestions or comments on this? Trying to decide if i will send it back :-(
But if there are no alternatives ...