I recently bought a 512k Macintosh and it works but won't eject a disk. I went through all the videos and websites that talked about fixing it and I followed everything but when I connect it and click the Eject icon the ejector motor moves around about halfway, the disk raises up, and seems to start moving out then it stalls. I have 2 of these drives, one was in an external case and when I use that one it won't read a disk to boot. I changed the ejectors and heads every which way and it seems to not matter, only the one head will read and neither ejector actually ejects. My thought was to buy just a bare drive but I can't seem to find any under $80-$100 on Ebay or anywhere else. Any ideas? I would be willing to pay up to $50 for just a bare drive but anything beyond that seems excessive.