Symptom: with just a push on the vertical stick, the phantom pitches up the back left and down on the front right. I end up rotating a bit as well. Things I've looked into: Swapped props Balanced props Opened up the case to look for weirdness, like cracks, nope seems clear there from my novice eyes. My only odd thing is the motor on the front right just seems a little less stiff and when throttling down the craft seems to come to a stop last by a second or 2. Any ideas would be great. Thanks!