Inserted the board into the box and marked the pin hole with a sharpie marker. It turns out the centerboard pin hole was not off at all. All we needed to do was to lift the board slightly and we would have had a fit. Why did I not think of the pen test yesterday...??? So instead of being 40 mm of we were only 30 mm off so I still needed the slot I cut yesterday.
Centerboard in place!
Will add the pin cap tomorrow
Then it was onto filleting again.... we also added the boomkin supports and cut out the centerboard case top (at least one part of it).