Hi,
For those of you curious about how to open this computer and do as little damage as possible...
https://photos.app.goo.gl/tKkFsPu4W7V6MmHE9
And for those of you who have observed the improper use of a tool that is not exactly cheap: Indeed those cutting pliers are for "soft copper" and they get ruined with the nails. I used them because they were already damaged and I couldn't catch the head of the nail without enlarging the surrounding groove further.
Best,
Gerardo