yeah, i usually get between 12-17 minute flight times. I usuall fly twice with one battery.....1st flight 5-7min.....2nd is the same, so that the motors dont wear out as fast. I dont sit there and time it, but i generally know about the midway point....you get a feel for it after a while. I am about to tear it apart and check all the solder joints myself in a few minutes. If its somthing obvious, i would rather fix it then send it to nj. I was messing with it earlier today and i got some slight response which may eliminate one possible cause and that is the crystal set. I think somthing just may have a cold soder joint.