I got one more reply from Matrox on the bezel management issue. Seems there are hardware limitations. Otherwise they probably would have fixed it from the get go. It's nice that they at least fessed up and didn't ignore my inquiry.
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Hi Rick,
Due to the bandwidth limitation between the graphic card and the TripleHead2Go, the available pixels in Bezel Management may vary on different triple mode.
And we could not do much more about the bandwidth.
Thank you.
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I got the same response from them. Makes me wonder exactly how the bezel management works. I assumed it was either done within the box itself or within the software and instructions sent through USB to the box. If bezel management is done within the box, then the bandwidth between the card and box has nothing to do with it. If it is being processed in software and sent along the DVI cable, I suppose it could mess it up. But then why does one screen (the right screen) scale all the way to some ridiculous bezel offset without a problem?
More likely is that the bezel offset is done within the box due to the fact that the box splits the images. If it is done in the box, then the bandwidth should not be an issue. Seems like a shoddy explanation to me.