This is a relatively easy step, there had to be at least one!

FC1 is just a bit short due to it being trimmed with that wedge taken out to fit the main wing correctly and match the CS spar. I just found a scrap of foam and got it to the right thickness.

Then it was easy to glue and pin it in position (pic3). I later trimmed the edges and will do a final trim before any glass layups. Its pretty close to the right size for FC1 now.

This will all be removed later and is just a former for the glass to glass area. I wanted the sizes very close in case it was an issue in determining wing bolt holes later. I can just use the plans sizes now.

Check thickness required

Rough outline

Glue and pin