Estes Skytracer Clone #1361 Build, Part 8, Filler/Primer & Dowel Detail

After sanding smooth the CWF - 

The wing fins, standoffs, launch lug and standoffs were taped to scrap cardboard and sprayed with filler/primer.

After drying and before sanding - 

You can see some dulled areas of the balsa needed another shot of filler/primer.

The wing fins were glued onto the main airframe tube.

I thought the dowel went all the way from the engine tube to the outside edge of the fin rear. But - 

The dowel end is about 3/8" from the outside edge. I checked the instruction drawing this time.