Matt, I'm not suggesting it should be changed to 40 mm, what I'm saying is that the 33.5 mm tail shim method you describe and the 30 mm below the center of the stab hole method that Andy describes do not come out the same for me.

Question on the the 33.5 mm shim method. Is the point of this intended to level the plane so the existing stab tube and anti-rotation pin location will be level, or are you moving the location that is used for the anti-rotation pin as Jason did?

KeithB