12. Install four ¼ x ¼ stringers between F-1’s & F-1A’s. The two
upper most will butt against F-1’s (no notches). Install the four
wing saddle doublers now.
13. When installing the four wing saddle doublers, be prepared to pull
the sides in against the F-4 & F-5. Use tri stock to help hold it
when gluing to the F-4 and F-5.
14. The stringer at the top of FS-1B should end at F-10. Now before
you add F-S4A make a 1/64 or 1/32 ply doubler, which goes from
F-10 to the rear of FS-1B. The doubler should stick up above FS-
B so it will be flush with the top of FS-1B when it is put in place.
There should be a doubler placed on both sides.
15. Now you may plank the rest of the fuse at your leisure. Do not
plank the section on the fuse on the bottom between F-1 & F-3.
You sheet it only after the wing has been built and mated to the
fuse. After you have planked the rest of the plane then install the
tail wheel assembly.
