Yes, you have to do all these steps, unfortunately. The situation is much more complex than it seems. The video shared by a participant of this forum is really useful, but the process is complicated. I could not do all this work by myself. Everything started from removing the
sun shades for car to the engine, door skin, etc. So, if you make a wrong step, you can end up in a very bad situation and make everything worse. That's why I would still recommend you to ask for the help of a specialist. He will do all this work for you with great care, and thus you will not have any trouble.
