I'm considering the Sanyo PLV-Z4 for my future projector purchase (and maybe the Panny 900 as well). Due to low-hanging bulkheads in my basement HT, I've got around 10' - 11' distance from the screen to projector when centered. I can gain an extra 1' in distance though by mounting the projector off-center (my bulkheads have an opening off to the side). I want to get the most distance possible for a larger image and would like to mount the PJ off-center if the lens shift is adequate enough. Specs for the Z4 show: "UD: -100% --Center-- +100%, RL :-50% -- Center -- +50%" Does that mean I can move up to half a screen's width to either side and still have a centered picture (basically, the PJ could line up with either edge)?