Another post on my dishwasher (I was writing my Amazon review this morning). As I was writing about the visible gap on each side, it dawned on me that the installers had pushed the washer about 0.75" too far in, so the sides of the washer didn't line up with the edging on the cabinet. I pulled it out, lined it up, put in new screw holes for the top brackets - and it looks a lot better to me now.
The installers were trying to get the door more flush with the cabinet, as it's thicker than the one on my old washer, so I can understand why they did what they did. I'd rather have the washer line up on the sides, though, so I'm glad that I moved it.