Dvd burner wont eject



I just bought a brand new lite-on dvd burner which came with two bezel covers. It initially was black, my cpu is white, so i changed it no problem. i then installed it and everything was fine until i went and hit the eject button, it tried a few times and then quit so i powered down used the manual open button and it popped open. then i took the tray cover off thinking it was catching i didnt see anything but i left it off anyway restarted and the eject works but now i have no protection for the drive and it is slightly more noisy. i know the face plate is attached correctly and does not stick out anywhere or have broken peices. i cannot explain this and am awaiting a response from lite-on. thanks for any advice