Make sure the stab is almost
all of the way to the back of the boom. Leave about 1/16" to 1/8" of boom
hanging off of the back.
Use a pin and apply a small
drop of superglue to the leading edge and trailing edge of the stab where
it meets the boom.
Now take the fin and apply
superglue to the bottom of each of the fin posts.
Then position the fin over
the stab and hold in place, if you have a helper then have them spray some
accelerator on the glue to speed up the process. If not, then you will
have to hold this position until the glue sets (about 1 minute). Try to
hold the fin up as vertical as possible.
Once the glue sets enough
for you to let go of the fin, apply some accelerator to the joints to make
sure it has cured. When you are done you should have something like this.
.