Very useful...and just plain interesting. I had entirely forgotten about the SE5 Wylam drawings in the MAN Scale Aircraft Drawings book (Vol. 1). The Wylam drawings give the dihedral as 4.5 degrees, while the rigging instructions list it as 5 degrees. And that's what it is on the CDScaleDesigns plans (near as I can measure it).

The Wylam drawings show the lower wing incidence to be 6 degrees with the top wing at 5 degrees. Interesting. The stab was apparently also at 5 degrees. The model wing incidence is also about 5 degrees but the stab is only at 3 degrees. But as I said, all that is built into the model and is pretty much unchangeable. What I can adjust is the dihedral and the incidence of the wingtips.

No washout.