Big Back Cover Kobo Touch N905C

I replaced the dead battery in my old Kobo Touch, but it wasn’t compatible with the old back cover because it’s a bit thicker. I found a very well-made model, but unfortunately it wasn’t deep enough, so I decided to modify it to make it compatible with my new battery. I hope this is helpful to someone else as well.
I basically extended the height of the model by cutting it with Bambu Studio, then I extended the base (only in height), and finally I joined the two pieces together.