Hello!
I bought your products of B777-200 and B767-400ER through MS store X-box account.
Both of SIMs do not simulate correctly with yaw stability and pitch attitude.
Viewing from the tail, rudder is moving irregularly all the time while flying. 
Also pitch attitude while approach and landing is too low than real airplane reffering real airplane for each flap configulation.(I am a retired B767 pilot)

Please give me appropriate instructon to reslove those problems.
Thanks!