I am wondering if these scenery programs (gmax, FSSC) can be used to modify existing FS9 scenery. Specificaly, to make a building larger. (I grew up  in Seattle and know that the Washington Mutual Plaza in downtown Seattle is MUCH bigger than what is displayed in FS9. The Washington Mutual Plaza is the third tallest building in Seattle and in FS9, there are many buildings that are taller than this one). Can I use one of these programs to make this building it's correst size?