"J.Kahn" wrote in message news:U5JYh.120163

My beef with the steel mandrel Avex rivets Zenith uses is the fact that
contrary to their claim that the fracture surface of the stem, which has
no zinc plate, won't rust, they do in fact rust as a look at any older
Zenith that's been parked outside will confirm. I would recommend filling
a syringe with epoxy zinc chromate and adding a drop to each mandrel hole
on all the top surface rivets.


I filled mine with structural epoxy before painting, levelled each hole and
it looks like solid rivets. It's not necessary but it looks nicer.