I have a brand new Canon Canoscan 5600F flatbed scanner dated 2008 which works great except for one minor problem. When I scan, the paper will scan, but it does not scan straight. It is slightly off. (Imagine a framed picture on the wall and you are trying to adjust it with your hands to make it look level) The degree of the off-level appearance is random. I searched on the web on how to calibrate my scanner, but I only found color calibration, not alignment fixes.