My optical drive won't completely eject a DVD-R disc.

The superdrive in my iMac won't completely eject the disc that is currently in. It will start the ejection process, removing the guard and such but the disc never makes it out of the case so that I can at least grab it to pull it the rest of the way out. I have tried the online suggestion of the business card insertion. But to no avail. I would like any suggestions or do I have to take it in to a shop for the disc removal, for which I don't have the time or the money to do.

Thanks

Steven in Montana