I'm pretty new to this whole DIY airport thing and have encountered a few obstacles so far. Firstly, I have used SBuilderX to get photoscenery and the imagery contains white tiles that state no photo data in the ocean area. I was wondering how to exclude these tiles from compiling the overall scenery as at the moment there is a patchy white area in the sea. Secondly, I was wondering if it was possible to alter/remodel the terrain to make rocky outcrops as per satellite imagery, and if so how? Thanks