I have a set of Don Smith B-17 plans and have found that it lacks a great amount of detail and contains many errors in several of his sheets. So I have decided to redesign the plane to correct some of these issues. The problem I am having is engine nacelle placement. The root airfoil section has 3.5 degrees of incidence with 2 degrees of washout at the tip. The center or thrust line of the engine nacelle in the front view appears to be going through the cord line on the LE. However the side view show the thrust line is offset from the LE and would appear to be going through the cord at some other point (ie. CG or M.A.C.). What is the correct location for the thrust line of the engine nacelles?

Thanks,
Mike