TO SWAP BEARINGS: I just swapped mine out and I think the way I did it is the simplest. Remove the bearing covers from the center bearing of the spinner by prying them off. Place the new bearing flat on a table and place the spinner on top of it with the center bearing placed directly above the new one. Make sure they are perfectly aligned. Press down slowly and firmly with the heel of the palm. The old bearing should start to get pushed out of the top of the spinner and the new one pressed up into the bottom of it. Keep pressing and checking until the old bearing is out. I found it easiest to make the new bearing flush by placing a quarter above and below the center bearing of the spinner and pressing down pretty hard onto the table. This didn't require sockets and I probably could have done it without the quarters if they weren't available.
That_One_GuyThat's exactly what I did! And the resulting spinner is ten times better now (I think I had originally gotten a bum bearing in one of my spinners).