A while ago something fell on my open MBP right above the superdrive and dented the top panel. Since then, as far as I can tell I've been reading media fine, but the Superdrive will no longer burn or automatically eject. The slot is a little warped. I'm considering fixing it, as I've found that I can get a replacement drive for under $130. However, I've done some research and seen that if I have to replace the top and/or bottom casings that they cost ~$250 each, which is not near worth it to me. So will I be able to fix the MBP without replacing the casings? If I fit a new Superdrive in there, will it possibly reshape the top casing and work?