Cebra,
If you elect to use the repo trim clips, they can be a little distorted out of the package and may need a little tweaking.
The red arrows point towards the gaps that I flared out slightly with a small screwdriver.
I just opened them up a tad and made sure both sides were even/symmetrical.
I used the velcro pad between the clip and trim pieces.
Careful with the skinny metal wing that tension locks the clip to the trim.
They are very fragile (poor metal tensile strength). You might need extra clips because they do break.
I also deburred and paint touched up the mounting holes.
Using a little water based personal lubricant on the clips, I gently pushed and snapped them in.
Good luck,
Sam