I am new to helis so if someone could help me out, I just got a blade cx2 yesterday I have flown it through 2 or 3 batterys with no problems all the sudden now when i try to take off the heli just lifts up and like nosedives to the left it first started when i was flying it and i could not get it to hover it just kept going forward even though i had the trim all the way down any suggestions please i have tried every trim adjustment on the radio