Welcome to the double dimple club, Ryan. It's considered a right of passage, actually. Most folks just put the rivet in the correct hole and drive it. Fill the other hole with bondo when you paint.
Put a sticker over it if you intend to fly it unpainted for awhile so folks won't see it <g>.
b,
d
PS: My '8' hole is on the VS of my RV-6, right under my 'United States of Texas' sticker.
