I had the CG like oxai recommend and the model was flying good
My hacker was to hot (the test fly was at 38 degrees with no cooling panels yet to the eng) and my focus was on that .
Next week I will in go back to Israel from India (after I was playing with heron uav 1200kilo model) and I will fly it more. And give you better answer
Bat from first impression there is no caplling at all and the Rader power is very strong the model is with good stability on bumpiness something that we have a lot in Israel the only mix that I did is to the down line.