Like most things these didn't really fit. I took the shear web area as critical and placed the two blocks on a straight edge. As you can see in pic 1 its not perfect.
A touch with the sanding block and I joined the pices in my gluing jig. A few pins are good for putting the edges in place.
Overall the foam is quite flexible before being skinned and I should be able to get it straight and sitting well when it comes time to join the wing together after the web and spar caps are done.