Estes Super Orbital Transport Build, Kit #7314, Part 13, Fitting The Nozzle Ring

Well - the green centering ring was loose in the BT-50 glider tube.

Normally I'd build up the outside diameter with a ring of glue, but I didn't want a open gap between the tube and ring. 

I built up the ring with a wrap of copy paper.

The strip was 1/4" wide x 4 1/8" long.

Use a glue stick to apply the band of paper. Wood glue is too wet and could make a sloppy wrap.

Here's the built up ring with a much better fit.

TIP: Note the inside edge of the ring is a bit wide and rolled in over the edge for an easier slide into the body tube.

Those two dots indicate this is the second of three builds.

I won't glue the glider nozzle in until after the inside surfaces are painted black.