The Righty Mouse!!

I've had a problem with a mouse recently. No, not a real mouse, the mouse connected to my computer. It doesn't seem to want to go in the direction I want it to go. I was watching MSNBC recently while I was playing cards on my PC and I noticed my nouse wouldn't go all the way to the left of my screen. It seemed to stop in the same place every time. I have taken the mouse apart multiple times and cleaned the rollers. It still stops in the same place. Today it started working a bit better while I was watching Fox News. I go to Fox occasionally to see what they are saying about the campaign but my first place for political news is MSNBC. So now I am starting to wonder if Fox got into my computer some way and is trying to to stop me from going to the far left.