I was planning on taking off my window tint. I have the thick johnson n johnson tint film. I've seen it done before..the guy just tear it off, and use a window scraper to get rid of the adhesive. Is there any other parts I'm missing. Like should I use soap or some kind of window spray, something to deal with the adhesive. Also how do I deal with the rear with the defrost lines going across. Cant really scrape the rear without cutting the lines somehow. I have a coupe so it's really tight back there. Any advice before I begin.