After the fins are lightly tacked in place, they are checked from the rear for correct spacing.
A CA fillet is applied with a toothpick tip.
Place a drop of CA on scrap paper. Dip the toothpick in the drop.
Drag that drop down the root edge joint making a fillet.
It might take two or three applications to build up a fillet or fill a gap. Any extra glue can be sanded down with 400 grit sandpaper.
It'd be a good idea to join the upper and lower sections together when gluing on the fins. This way you are assured the upper and lower fins are in line. Use that leftover half coupler to hold both sides together.
TIP: The instructions say to cut the lug and standoff in two and glue that to the body tubes. I decided to save a few steps and glue the lug to the standoff, then cut the longer glued assembly in two.
This way I could sand the ends of the lug and standoff flush with each other off the main body tubes.
All the fins and lugs are in place and in line with each other.
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