I don't get it, it stays pretty stationary in GPS mode, if I am in attitude mode it keeps drifting hard to the left, so much that even if it's completely still & no winds I have to actively counter-adjust with the controller to keep it in place. What could be causing this? I've calibrated IMU, but it will not allow me to do advanced calibration, says motherboard is too warm or something, no matter what I do. I've also done the compass routine. I also checked/calibrated the controller sticks, and I think they stayed spot on central, I will re-check that later. You guys got any ideas? I am almost always in GPS mode anyway, but this behaviour is not normal & I'd like to sort it out.