hum, last post didn't seem to stick. I will try again so sorry if there are two replies.
I plugged the model number into google and it came back with the manual:
206.65.179.140/files/pro_man_xgv10xu.pdf
Glancing through it, this unit seems to have not only
lens shift but digital
convergence. With both of these features, you should be able to mount the projector anywhere in the field of the screen and adjust accordingly. Does yours have these features?
kw