i had a fatal crash a month ago (maybe a voltage problem). I rebuilt the quad with new engines and everything from the scratch. Today i flew 6 batteries and everything was really good. On the last (almost fresh) pack the quad suddenly fell from the sky. Again on a paved road so it got destroyed again. Can anyone please tell what happened from the logs? I really need to find out what happened because i cannot afford a fatal crash any month. I am almost about to give this all up although i really love it ...