Turns out I installed the wrong grommets for the wiper assembly-which is why it was such a bitch to install. I now have the proper grommets and the wiper bearing covers as well. They're not easy to find-I've been looking for quite a while. One set for now and two pair for the finished restorations.
There were quite a few other parts in the box as well but the screws and the wiper parts are what will get me closer to where I want to be.