keyclone 22inch and 19 monitor question.

Hello got a question about keyclone . i got a 22inch WS and a 19 reg lcd . when i set up my regions on the 22 i set it up normal as whole screen. When i do second display 19 i split the screen in half top/bottom.
When i run them the 22 inch sets up fine. but on the 19 it sets up top/bottom but its not takin up the whole screen as in the set up mode. it leaves about 3 to 4 inch of black desktop on each side. Was wondering if anyone has a solution.
Anyway thanks so far .

that sounds a bit odd.

what version of keyclone are you using?
what is the resolution of the 2 monitors?
assuming you use the maximizer.. what are the coords & dimensions of the different regions?