I just bought and setup a raptor 30 v2 and it flies great. When I brought it into a hover there was a little tail wag so I lowered the gain. There is still a very slight oscillation. Is there always going to be a little because it is gas? When I give a rapid rudder input sometimes the tail begins to wag aggressively back and forth. It is strange that it only does it sometimes, any ideas? Thanks!