I didn't have a lot of issues right out of the box. Blades were balanced nicely. But I ahd the 2 rubber inserts that you get with a servo to mount onto a board. I seated them under the Go Pro mount and used some longer screws to attach and screwed it down. Works perfectly!!! I will post pics soon.. but it was a $0 cost and seem to do the trick nicely. Thought I would share..