The rivet holes in the nose skin need final drilling with a #33 to allow a MK-319-BS rivet to fit. Interestingly, later on for the ailerons on page 22-08, Vans suggest a slightly smaller #34 drill for these rivets???

Anyway, you’ll need a long drill bit to get access to the holes near the hinge assemblies.

I used my pneumatic rivet gun to set these rivets, which made the process easy and enjoyable.

The wedge technique worked well for the holes near the hinges.

The manual stipulates solid rivets for the end ribs, so I positioned the flaps across the bench to get better access.

Then a straightforward job to set these rivets with the squeezer.