Tonight I filled some unnecessary nutplate holes with rivets, in the bottom of the fuselage. I had been puzzling over how to river these, and decided to back river them. That worked ok, except for one right by the spar, where I can’t get in snugly enough with the rivet gun to rivet straight. The ribs and spar flanges get in the way. I’m thinking I’ll pop rivet these, vs risking damage to the spar.
The nutplates are for the tricycle version, and hold the gear leg fairings.