Once the mast/fin case is in it's pretty difficult make any serious amendments. So a double check is a very good idea and helps calm the nerves whilst the glue is setting. Here I have checked that the mast and fin actually fit and that there is sufficient tolerances to allow for mast rake, free movement of the kicker, sufficient adjustment for the mast ram and height for the main fairlead. I also checked the width of the mast side supports and shroud lengths on the model.
Everything appeared OK so I'll go and mix some epoxy