N9MB drawings, facts

[mikeatfw]

I am looking for accurate top, bottom, side, front views of N9MB. The drawings that I bought on the web do not seem very accurate. Also, what is the airfoil? The plans feature Eppler 334 airfoil - doesn't seem right, not reflexed enough. Also, top and bottom color (yellow and blue).
Looking for details on the elevator trim (looks like an aileron with split flaps), and split flaps which serve as rudder and speed brakes. Also, the shape of the wingtip (top view).
I have found many pictures on the Internet and have Planes of Fame book northrop flying wings which has a lot of description, but not much detail.

Any assistance will be greatly appreciated,
Mike