One I've been looking at for a while now RVW and you've made a great job of it.

For what it's worth I always err on the side of dihedral even when it is supposed to be zero degrees; something I found out many moons ago is that we can spot a sagging wing easily, but one that has a tiny bit of dihedral tends to go un-noticed (A bit like when you put some lettering or a word in the exact middle of a space it always looks too low so signwriters always add a tad more space below the word to make it look 'right')
I'll add the Datafile to my must get list since it seems to be one I am missing . . .
Paul