I think I'm having a few issues with the GPS modes and compass signal. All controlled flying is by me in RED Mode. When it goes out of control, it's been switched to one of the stability modes. I tried RTH at the end and as you can see it flew off and crashed. I think it cannot cope with the geometry of the larger and heavier frame. I might make a 350 knuckle out od some balsa and ply and se if I have any more success?
