Like many other posts, my DMR-HS2 DVD tray will not open. You can hear the motor working but the drawer fails to open. I have taken off the recorder cover to expose the tray. When I then take off the DVD tray metal cover, it opens and closes perfectly every time, but as soon as the metal DVD tray cover is put back it fails to open?! All the metal cover does is force the DVD spindle down onto the DVD. There are no moving parts and nothing is out of shape or broken on the metal cover. Any ideas why this is happening? Although old, I do have a need for it to be working. Thanks.