Roger:

I followed what you said about using the bottom wing against the saddle as your reference zero angle and the horiz. stab should also be zero. from what you said about setting up the top wing, the leading edge of both the top and bottom wings should be at the exact same point at the location of the interplane struts. Couldn't I just check the incidence of the top wing at both interplane struts, and if so what should the top wing incidence be?

Thanks
Stephen