I've never hung a TV, but just bought a 46" Samsung off Craigslist for my billiard room. The guy I bought the TV included the mount he used, but I'm not so sure this mount is meant to work with this particular TV. The brackets on the back of the television don't fasten snugly against the back of the TV, allowing the bracket room to move. By that, I mean the screws are too long, even after using spacers. Is this normal or should I be able to tighten the screws enough so that the bracket doesn't have any room to move?