When I flip the s1 switch up and down about 5 times the vision goes into calibration mode and lights yellow. I spin it on a horizontal axis and it lights green. I switch s1 down once and back up and it's yellow again. I try to rotate it on the vertical axis but never get the green. What am I missing? When I turn it on and go to fly it's not telling me it's not calibrated but I also don't want to risk crashing over someone silly.