After having success with the X500 build I decided to look back at my fusion 400 which was not running so well. As you can see from the video below it is leaning to one side and not fully inflating the skirt.
The first ever running of my fusion 400 back in 2016.
With a bit of tweaking and by upgrading the 2 blade prop to the same 6 blade that is on the X500 the fusion 400 was running better than ever. As these blades were a pack of two for a quadcopter they have mirrored blade pitches. This means one craft has to turn its propeller clockwise and the other anti clockwise.
The fusion 400 looking much happier after some work.