In Keyclone Maximizer menu what is the resolution to the right of the enable Maximizer check button. I had a similar problem for some reason my resolution kept resetting itself to 800x600. when I manually went in there and entered the value they should be I was golden.

I have the same resolution but have 3 windows. the top one spans the entire screen the resolution I used was 1679x524. Not sure why I went 1 short on the width and height. Each of your windows should be 1680x525.