I have a ceiling mounted InFocus IN76 with a 92" diagnol Da-Lite screen. The projector is mounted mid-way between the manufactuers recommendation of 10.2' to 12.9' (lense to screen). Even with the zoom all the way in, I overshoot the screen including the 3" frame/border. Much to my surprise, the zoom only provides a few inches of adjustment. Any advise would be greatly appreciated.