Fit and glue a piece of 1/4" x 1/8" balsa in the bottom slots of
F1B thru F3B. Glue this piece to F23 also. Repeat for the
other side.
Fit and glue a piece of 1/4" x 1/8" balsa in the remaining slots
between F1B and F2B.
Slide a 1/4" x 1/8" x 36" balsa stick through the slot in F11
and into the slot in F10B and F9B. This stringer should come
to rest on F23. The stringer extends back to F21. You need
to cut it at F21 and glue to all formers including F21 as
shown. If it extends out past F21, you can sand it later.
Repeat for the other side.
Fit and glue 1/4" x 1/8" balsa stringers into the remaining
slots in F11 thru F21. The stringers should glue to F21 and
be flush with the front of F11.
Sand the stringers so they are flush with F21. This will allow
the sheeting to sit flat against F21.
Drill a 3/32" hole though the sheeting on the top of the h stab
through the tail gear block and the 1/4" stringer as shown.
Apply some thin CA to the hole to harden it.