Hubsan Zino - How To Calibrate Controller - I thnk.

Without any real documentation this is my interpretation of what Hubsan is saying. There is no instructions in any manual and this is supposed to correct RTH drifting or straight line flying wondering. The results are the same regardless of which buttons I push or how accurate I rotate the sticks. It is much easier to do with the controller in your lap.. Here are the only instructions from Hubsan..."For the Zino drifting going forward,kindly suggest you do the transmitter calibration Push both sticks to the upper left corner and power on the transmitter simultaneously.rotate both sticks in circles for three times ,release both stickers,then press auto take off button for 1.5 seconds until two quick beeps heard which indicates a successfful calibration." I hope I got it right.