Im having a problem with my cp pro. the first flight it hovered - only a foot or so off the ground, outdoors low to no wind (with heading lock gyro) - very unstable, the tail boom was loose so I unplugged the battery and fixed it then it would just spin left, I think that was just the battery getting low. Now it doesn't lift off and drifts left, even after I called the service number for the company, they had me adjust the servo arm and I had adjusted the trim full right and it still goes left and right stick will only slow it, stop it or tip it over to the right. I need help getting lift and not drifting severly to the left. My CX is in the shop too, it burned out 4 batteries in 2 weeks - it was brand new, I had to send it in for service - they think one of the motors is working harder then another - I didn't have any serious crashes. They said the turn around time is 3 weeks! Is there any quality control there?