Thank you! I've gotten a lot of help here (and on APUG) with other cameras - it was the least I could do to give back.
Have you tried using a solvent like Liquid Wrench or Bolt Off to loosen the screws? I messed up a few screws a while ago trying to force them.
That said, I have a few cameras I've set aside where solvents haven't worked yet and I'm afraid of messing them up. I definitely understand the frustration.