Hi, was hoping some of you wizards can you wave yer wand in my direction...I am trying to design an airport from scratch, I have done this before using SbuilderX for flattening ect. Using the new improved ADE 1.22. All I have started with is an airport center/location, no runways or any scenery items added yet. I go to make a poly and airport background flatten exclude autogen, the flatten and exclusion part works fine and as expected, everything is flat and bare of autogen but....the size of the actual area of land that is flattened and excluded ends up being about the size of a county. Estimate the size to be about 200 sq miles maybe. This happens no matter how small I make the poly. In fact it ends up always being the same area so maybe its flattening and excluding an entire scenery sector or something?? Anyhow I have never had this problem before creating airports and porbably something dumb on my part below are any particulars that may be necessary to know. ADE 1.22 FSX sp2 / SDK 2 Ulitimate Terrain X Ground Enviroment X X Graphics More than enough memory / speed ect don't think that matters much in this case. Area I am building is abount 10NM north of Columbus Georgia , near Lake Harding( Georgia / Alabama border ) Any help with this would be much appreciated, thanks.