i have a sony mx8815x with a rotating faceplate. However, it seems like there's a problem with the left hinge because when i press the close button, the faceplate closes part way and then opens up. I'm not sure if there's a misalignment problem or what, but it doesn't close properly, which worries because the rotating faceplate is the anti-theft device. any advice, or idea about what it could be? The right side seems to fine.