At 74 I get a really weird sync issue. At 60, the picture is there, but its smaller and toward the upper left hand corner....huh. And this is a widescreen monitor? Those are all 4:3/5:4 aspects.
Try D:1280x1024p-74 if you don't mind, and let me know what happens.
That's worked best for me, but with a 4:3 monitor. Not sure how it'll act on yours.
The only other option I can think of is one from the other thread - the HDMI switch with the EDID spoofer.