I've only had my Mavic for about a week. Flown is a couple of times in sports mode and according to the display it was over 50mph leaving me with the impression that there's nothing wrong with the quad. However, I can't get the speed over 8mph in normal mode. I have the latest firmware. The temperature is 80 degrees. I flew in 4 different directions on a very calm day. Speed max'd out at 8mph in all directions. Is there a setting somewhere I'm missing?