Got ahold of them. They stated that the ball joint goes on the underside of the arm and the studs go in from the top. They asked for photos of my issue and said they normally have issues with people putting them in from the top, but this was new to them. At first thought they said the arm could be deformed somehow, maybe from rust expansion.
I emailed them the photos and should hear back from them soon.
I emailed them the photos and should hear back from them soon.