Before gluing the fins to the body tube, all balsa grain and launch lug seams were filled with thinned Carpenter’s Wood Filler and sanded smooth.
The angle of the wing fins will be hard to glue to the body.
I sanded an angle to the root edge for more gluing surface but it didn’t help much.
The best solution is to lightly glue the wings on the rear tube as you normally would, with the fins sticking straight out and away from the center of the tube.
When the glue is starting to set up, set the wing tips down on your work area and press down on the tube using the setting glue as a “hinge”. Press down on the intake tube until the bottom is touching the flat surface. The wings will bend at the glue hinge and assume the correct angle.
The illustration at the bottom of step 16 isn’t really accurate. The root edges of the wing fins are glued lower on the body tube than shown.
The lower pencil lines to show the real angle of the wings.
The two tail fins and underside rudder fin were glued in place as shown in Steps 17 and 18.
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