New Way Lunar Jumper Build, Part 8, Tube Fins

While the tubes were still separate,

The edges got a wipe of CA glue. 

Sanding with 400 grit followed.

Using my aluminum angle, 

A pencil line was drawn down all the six tubes.

A glue line was applied down the lower half of the BT-5s,

Pres into the BT-20 tubes lining up the pencil lines.

Here's how the tubes look from the rear, the bottoms are flush.

Apply a line of glue down the pencil lines running down both tubes.

Press into the outside edges of each fin.

Visually center on the pencil line.