First, thank you everyone for offering your assistance!
Second, I'm now closer to making this part, but I apparently haven't done everything correct yet.
I now have a .txt file edited for the new part. New name and description, weight changed too.
But when it comes to the uncompressing of the .CFZ file, I'm getting confused (I'm actually dumb af with this sort of stuff, if it wasn't obvious yet). In CFZ compilier, when I look for the components CFZ file, doesn't show up. So either something's wrong or I'm missing something easy here :/