I have skydemon running on my galaxy s3 (android) and I am just about to start using Nexus 7. I am unable to change the rwy approach, if I tap the i button and then approach nothing comes up other than information designation grass/asphalt length ect,so currently the current approach is stuck on a rwy that I never use. I have checked the runway extension tab in set up but still cant choose/change to the runway in use on the day. Any thoughts chaps? what have I missed?