Oem bed divider with tonneux cover work s as round

[TripleB]

Hey when i try to put the bed divider rails on top of the existing oem rails the tonneau cover clamps get in the way.
I have ordered some shorty clamps that me leave enough space to sleep the bed devider rail on top of the existing rails.
But i also read somewhere about trimming a little but not sure were.

i have figured i can cut a hole on top of the divider rails but i am pretty sure someone already wrote about how they renidird this. Just like to read it again.

Thanks.