Opening Screen Moves Down

When starting FS2004 the opened screen tends to move further down the screen each time FS2004 is started. This was mentioned in a previous thread which advised that in the FS9.cfg file, if you remove the location numbers in [Location] Main= it resets the screen to the center. This works, however the screen still progressively moves down with each start-up. I'm just wondering if there isn't some way to prevent this. Does anyone know?