First of all, I have to say that I am really enjoying the plane so far. Once again I am amazed by quality of the product. However, standing at the gate and playing around with the fuel and payload, I noticed something strange. When I load and unload fuel, I noticed that the plane sank down and rose with each respective action. I tried the same with the payload and got a different result. When loading, the plane started to rise while unloading made the plane sink. I don't know if this is supposed to be this way or not but I figured I would mention it anyways.
Keep up the excellent work,
Chris Bertram