My 2008 iMac's Superdrive (DVR-K06PB) is not releasing discs. I've opened the drive itself and found the spring loaded lugs on the spindle don't seem to be allowing the disc to release - the mechanism pulls the spindle down, bending the disc slightly, then reloads the disc because it can't release it. Turning the disc upside down yields proper eject operation (?!). I've tried various different CDs and DVDs, all seem to have the same problem, some less than others. I'm wondering if the lugs are protruding just a little too much and will need a bit of a file down to help the release, or even a bit of lube. Thought I'd come here and get some advice before I did anything. The drive works just fine in every way except ejection.