My TV has 4 screw holes in the back (in a square pattern). I think that must be a standard pattern because several of my TV's have the same pattern. Does the mounting strip that screws to the back of the TV have holes that will accommodate that pattern? (The top 2 holes are not quite 4 inches apart from each other....same with the bottom 2 holes). There's a notice on the back of the TV that says to use type M4 screws. Does this mounting unit come with the necessary screws?