filmscanners: leveling scanners

[Sam A. McCandless]

I'm adding a Polaroid Sprint Scan 4000 to my already crowded desktop, 
and it does not seem (I don't have a level) to sit precisely level in 
either of the two places I had hoped to put it. That worries me 
because I think I remember reading somewhere that it's important that 
a scanner sit perfectly flat. I'd appreciate any advice about how 
important leveling scanners is. (My older Epson 836XL flatbed looks 
level but may not be.)

Thanks.

Sam