There are a lot of rivets holding the Avion together, and every single one of them is an opportunity for leaks. With panels to be replaced, lights installed, rock guard attached, solar panels mounted and more, there are also a lot of new rivets to put in.
There are a few different kinds of rivets.
David started by using Olympic rivets. But now we are using buck rivets exclusively.
PROS of Olympic rivets: can be installed by one person. That person just has to have access to one side of the thing being riveted
CONS of Olympic rivets: most of these leaked immediate after installation. So it is hard to have any confidence in them. They also don't look as nice.
Buck rivets take two people, one on either side of the thing being riveted.
It's just better to do it this way. So.many rivets. Weeks of replacing them. I think we are caught up now.