Hi everyone!! I had a bad experience some days ago with my phantom and it crashed It wasn't really high, around 3-4 meters, but it had a gimbal + a gopro so it was really heavy. The main frame had some marks, but overall it was looking good. I've removed the gimbal and the camera to test the phantom after the crash, all engines started ok, but when I wanted to takeoff it never separated from the floor even though the propellers were spinning incredible fast. Making a really loud noise! I did an advance IMU calibration, calibrated the compass, changed the propellers with new ones, but nothing helped. I even opened the phantom to check if all cables were connected inside, everything seemed ok also there. What could it be? What else can I try? Thank you very much!!!