If your cnc turning center tailstock is out of alignment, it doesn't mean you should throw out the machine. Chucks like these got invented! This is a great way to get your machine back in working order. It's easy to replace the tailstock and you don't have to take it apart
Here's what you need
A cnc turning center tailstock that matches the one that's out of alignment. You can get one here
A replacement chuck for your cnc turning center tailstock. You can get one here or here if you don't have access to either of those websites.
cnc turning center center tailstock out of alignment