Best thing you can do is install the disc last. Once you have tested the spinner and it is all together and working, screw the head down and put the disc on. It's got double sided sticky tape and is almost impossible to remove. I'm running mine without the screw in it and it holds just fine.Very informative post, @imbord3rlin3. Thanks!
@hursit, is it possible to purchase extra discs (covers for the top of the spinner)? I can see that part getting easily damaged if you ever need to remove the spinner.