so right after doing the firmware upgrade i started experiencing drifting and j hook....doesn't happen all the time but when it does the craft drifts pretty quickly, most of the time to the right....i notice the craft start to twitch a little and then it starts to drift....was on the phone with yuneec tech a couple of times walking me thru some things to try and fix the problem.....nothing worked...now they want me to sent in the h and the controller...i just lost literally months because my first camera was faulty and now this.....anyone else experience this and find a fix? i don't want to send it in again....FED UP!!!!