Beautiful model but it is very hard to fly. In the air right now in a mission but I cannot climb higher than 11500 feet. There is no sync between the UMS and where I’m flying, the mission flight plan isn’t loaded into the UMS. I ended up flying using heading mode or use VOR navigation which seems to work. Suddenly the aircraft just turns left or right and drops down so I have to be prepared to take the controls all the time. I have a strong headwind right now, maybe that is what is causing this because my airspeed suddenly drops a bit.
Is there a manual somewhere? I think we need some documentation but the aircraft seems to have a lot of bugs. I cannot turn on any lights in the cockpit so it is quite dark in here 
We will see if I can complete this mission and if so, my reputation will probably fall to the floor again.