I do not want to take the time to figure out when that hole gets a rivet. Instead, I offer some general advice.
Follow the plans exactly.
Keep in mind that the stabilator spar gets covered with skin. Therefore no rivet heads should be sticking up in the way of the skin.
Before closing up any part with skin, make sure that every hole has a rivet or that it will be riveted when the skin is riveted in place.
Read ahead in the plans so that you understand how everything fits together.
Looking at Figure 3 on page 09-08 might answer your specific question.
I have posted hints that might be helpful.
http://www.vansairforce.com/communit...ad.php?t=70542
Joe Gores