Image will not fill entire monitor

[jasonpx]

New eyefinity setup. Have Sapphire 6950 flex editions in xfire. Have all monitor connected to top GPU. 1st and 2nd monitors( middle and right disp[lays) are connected via dvi and they are working correctly. 3rd ( left display) is connected via hdmi to dvi converter. The 3rd display doesn't fill entire screen. Have a 1" black border around all edges. Need help fixing this problem.

i5 2500k
Sapphire 6950 flex edition xfire
Asus P8Z68 Deluxe mobo
Asus VH236H 23" monitors x3
5760x1900 resolution

[jasonpx]

*fixed*