My first gaming mouse was the razer lachesis, I've had it for about 2 years, Since day one it's been having trouble tracking mousepads, All it does is track the back of a notebook or cardboard, that's it. That's how I've been doing it, But when I organize my desk I like having the mousepad on it so it looks cleaner... What could it be? I bought a mamba not long ago and didn't bother to use it, Now I'm using it and it's tracking smooth as heck with my razer vespula; I'm going to remove the lachesis, But would like to know if anyone had problems with them as well....