Drivetrain Vibration

I could be totally wrong, but my understanding is you would want the tranny and rear to be at the same angle. They can be different in race applications where the rear winds up and then creates the same angle under load. In my eyes those angles you are showing are your problem. They have the tranny and rear at about 6 degrees different.

Watch the video above. They have a vibration when the angles are different.

Jack