The process is similar to the RHS wing. Line it all up and find there is a gap in the shape of a small wedge.

Sand the wedge out within about 1mm. Then glue the cores together all nicely lined up.

I hope I have it close to correct. I will make the spar troughs a fraction deep and hopefully minimise the amount of filler later required to line it all up.

May this effort pay off! At least I understand a little about how to line it up when its time to drill out the bolt holes after the wings and spar are built.

Lots to do before then.

FC1 gap

Gluing FC1 onto the long cores

A lot of wing in a small space