Canon 5D Mark III users that have the Canon BG-E11 battery grip: Have you had any issues with the multi-controller (joystick)? When I use it with lens attached to the body it goes crazy in the middle of shoots. For example, when I hold the camera using the grip and move the dot around it will move 2-3 spots in the wrong direction. Without it connected to any lens, it is fine. Just wondered if anyone had this happen to them or not.