I received a replacement Phantom 3 Professional from DJI China (drone only). I did the binding thing to my RC. Upgraded the firmware to version 1.08. Did the compass calibration. Took it out for a test flight. Brought it to a 3 foot hover and it began to drift to the right, and then faster so brought it down quick and it tipped over. Put it on my concrete basement floor and ran the IMU Calibration. Went back outside, redid the compass calibration. Took off to a hover of 3 feet. It seems to hover for a second, then drop 6 inchs. Then it begins to drift as if it's tracing the outline of a circle. Small at first but the circle increases. Bringing it down while it's moving of course causes it to tip over. Any thoughts on what the issue could be?