Window Liner -Two outer fixings

[karaka29211]

In the Finish manual Section 58 Page 200 , there is an understandable caution not to drill into the boot cowl to apply the two peripheral fixings on each side of the window liner.
However, there is little other instructions on the installation of the two outer window liner fixings.
I recognise the need to not drill into the window pillar wiring or fuel lines. Is this just a case of having a back plate to prevent this, or is there some other fixing installation to finally apply?
Are Trix nuts still the final intention for these two outer holes on the window liner?

[Pete D]

The last couple holes on either side are addressed a few pages later, page 203 at the bottom. They get a shorter screw to ensure the screws don't hit anything on the back side.

EX2 Finish manual pg 203.pdf