PMDG 737 NGXu bouncing after loading!

I am using the PMDG 737 NGXu. When I load the aircraft in my sim, at the gate (parked), when the message says, initializing all systems, at 17 seconds, the landing gear starts to extend, and the aircraft starts to pitch up, a tailstrike occurs, and starts to bounce and move forward violently, before coming to rest after 10 seconds. (It does these things, all by itself) This is a very annoying problem.


Srinjay Das
B737NG Lover❤