RE: Flash first flight
Bob, the up trim is normal when you deploy flaps. On my 10x, I have 12 units of up trim mixed with flap deployment.
Do you have access to a baby or package scale? If you can get me a weight from each of the three wheels I can do a precise comparison of CG. You just need to block up the wheels you are not weighing so the plane is level when you take the weights.