I did a downgrade to the 3.5 Axisflying frame. What I did was I kept the frame and C-157 v2 motors but I 3d printed a frame to be able to install the original propellers on it. If you ask why? just because I was curious to see how it looks and feel. I like the small footprint of the original AVATA . I didn't fly it outside because of the rain but inside was perfect.