Apply glue around the front edge of the tube and around the upper sides of the centering ring.
The launch lug extension is CA glued after all is slid in place.
Medium CA glue will lock the lug in place and stiffen the straw for easier cutting.
Use a single edge razor blade to trim off the lug. Make the first cut a little long, not right up against the shroud body. Trim to size after the initial cut, when you can better see the lug/shroud joint.
The lug edge could look rough -
Use a sharpened dowel to raise the thin Mylar skin up for additional sanding.
Apply some Ca glue with a Q-tip. This hardens the thin Mylar skin for easier sanding and removal.
Some of the seam gap can be filled with medium CA, like the shroud seams were filled earlier on.
When the CA has dried, sand the glue bead to surface with a sanding block.
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