Thanks a lot for the videos, results look similar. For example, at 2:20 in the first video (KE flight) you can see the airflow going around the top and bottom of the fuselage, moving from the high pressure side to the low pressure side of the fuselage. This makes the fuselage inefficient as a lifting device.

Yes the fin fences do much more than directing the airflow, but the fin tip does stall in high AOA knife edge maneuvers, probably because i used a thin airfoil. This is why i'm going to use thicker airfoils at the fin tip for my future designs. Fortunately i did just that for the kit version of Radiance (although for the wrong reasons)