WRF DOMAIN RESOLUTION

[Phinous]

Hello friends and foes. I installed WRF and set up my domain using the WRFDomainwizard, and all is fine, except that I can't increase my grid resolution (dx and dy settings) ) say from 20000m to 8000m without a corresponding reduction in the overall size of the domain. Can this be fixed? I have tried to edit my name-list configurations to no avail.