I received a drone 2 in November. I enjoyed flying the [heck] out of it until (when in the first week of December) It finally hit the tree limbs a little too many times causing one of the legs on the center cross to break. Well I had to wait for Christmas (wife don't let me open early) before I could open up my box of a new center cross. Well, I replaced the cross, changed out the bushing for bearings, put new gears and propellers. I put everything together, hooked up the battary and everything worked. Upon flying it for the first time, I notice that if did not keep my left thumb on the control the the craft took off to the left but when I kept my finger on my iPad, I am able maintain a hover and control this flight, hight and direction. It is only when I my left thumb off it [again] banks to and flies to the left. The center bar is evenl distributed within the fram becuase i am able to put the internal haul on and all four props fits properly. I even made sure I was on a level surface and press the "flat trim" on a couple of occasions thinking that would reset and level it out but with no such luck. I hate to think that i might have a faulty control board or sensor. Has anyone experience this too where your drone seems to have a mind of its own? In closing, all screens in the setting menu checks out fine and no errors appears anywhere.