I've had my 2 vision since this past friday and the only time there has been an incident is when it was landing or taking off. It almost seems like its heavier in the rear. When I take off it seems to lean back a little. If I barely make it lift off it will fly backwards and land on the rear props.. Dont know if the rest of them are like this or not..
I bought it from amazon, so i should be able to return it if its not normal
I bought it from amazon, so i should be able to return it if its not normal