I don't have the Naza yet, I expect it next week. I'm only guessing but it sounds like you've got vibration issues. Have you tried balancing your motors? (http://www.youtube.com/watch?v=QnjflLDxQQU), Also, have you tried balancing you props? (http://www.youtube.com/watch?v=N02NHYrpA0g). Look for...