Estes Orbital Transport, Kit #K-42, Part 16, Small Fin Placement

Here's a view from the top showing the glider support piece positions. The instructions say to glue them 2 7/8" from the rear. I glued them 3" from the rear so they didn't overhang the glider wing.

The ventral fins on the bottom.

It's a little tough getting the fillet on next to the rear launch lug.

I used a wrap of tape to place the forward tips of the canard fins evenly.  These canard fins were cut from 1/16" balsa.

Pay attention - Throughout the build you are going back and forth between 3/32" and 1/16" thick balsa.