I had to start over 3 times cause I wasn't following the directions right and Mr Mouse was giving me his usual hard time. You have to make sure you click on the very middle not on the edge or it doesn't take
. I also have a mouse that has a mind of it's own for some reason. I thought it needed cleaning and took it apart and cleaned it, put it back together and still it's spazzing out
. So on the 4th try I finally got it down pat
.