how to disable Sony UX180P mouse clicks?

I got a UX180P which uses a stylus and a mouse thumbstick/button set. As amazing as this device is, its realllly annoying how if you press the thumbstick even lightly, it acts like a left mouse click. Why would anyone do this? I cant move the mouse from one side to the other without it clicking and dragging everything.. I know I cannot be the only one that finds this annoying but i cant find ANY topics for this anywhere... can anyone help?