You can get a few more degrees out of it by adjusting the center point of the servo. I think it's 90 degrees total, so you are seeing the 45 forward, and there is also 45 back to help adjust the camera during travel. If you don't mind giving up some backwards travel, you can get more forward pitch. I had mine so it was about 80 degrees forward and only a little bit back.
I can't remember exactly how I did it in the software, but look for the center control and then offset your servo horns to match it. That should get you close.
-Terry