The fins and air scoop were harder to glue in place than I would have thought. The "Double-Glue" technique might help here.
The first side of the fins glues on without too much problem. Here I'm using a sharpened dowel to set the tab down.
Let the first tab dry thoroughly before trying to glue down the other side.
Before applying glue the other fin tab, be sure the tab bend is straight from one end to the other. When gluing the fins, handle the cone with a "light" hand. It's easy to put bends in the card stock when pressing the fin tabs down.
As mentioned earlier, these fin tabs won't want to sit in their location rectangles printed on the cone. You are doing some paper "forming" here, changing the way the fins want to fold and sit on the cone.
While the first air scoop tab was drying, I went ahead and tied the elastic shock cord to the Kevlar with a simple overhand knot. These tied lines were fed back through to the front of the model.
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