Quick question. I have an intuos 3, but have trouble tumbling, panning and zooming. When I click on the mouse the proper icon shows up to what it's about to do, but as soon as I move the mouse then looses it's grip, as if I've let go. My normal mouse works fine. but I would like to only use one mouse if possible. I even tried setting the pen to have the middle click on the pen, but that isn't working. Any one else have issues like this?