Looking for Optical Drive Replacement

I know what you are talking about when you say they are hard to find. This is the source that I used to replace my optical drive but it requires some extra work. First you will need to follow this guide to remove your optical drive:

Sostituzione Unità Ottica dell'iMac Intel EMC 2309 ed EMC 2374 da 27"

then you will need to buy this replacement part right here (I know that it says its for the 2.93 GHz model but it will work with any 2010 model):

http://www.mydvddrives.com/index.php?rou...

then, and here is the part you will need to pay attention to, you will need to transfer everything that isn't on the new drove but is on the old drive over. This includes all the mounting accessories and temp sensors that will be found on your old drive but not your new one. Once the old drive looks like the new on and all the parts that were on it are installed, you can reassemble the iMac.