i have this tint on my car that came with it and it looks as though they tried to do it themselves or had someone do a real ****ty job on it, the back window its pealing and looks watery, and the side windows if you look close enough you can see where they poked holes to get the air bubbles out...my question is i want to replace the whole tint and i am going to have someone do it for me...is it easy to replace? will it ruin the windows?