And I think that may be part of the problem: I didn't find that to be a comfortable position to use the mouse even for short periods of time, having to hold my

And I think that may be part of the problem: I didn't find that to be a comfortable position to use the mouse even for short periods of time, having to hold my fingers and palm up and not having a resting, but still moving the mouse, position. I found it extremely hard to get fine control of positioning while clicking, I'd always end up moving the mouse slightly while clicking (incidentally, I have similar issues with the touchpad on the MacBook Pro).