Back on page 25-02, it has the note that only left side parts will be shown. Step 1 on page 25-04 says to drill and dimple a single F-01438-R Cover Rib. It seems to me that this should also be done for a single F-01438-L Cover Rib for the right side of the plane, but the instructions are ambiguous on that point. Just thought I'd check here for confirmation, even though I already drilled and dimpled both of them.