3rd time was the charm. It's a snug fit for sure. I had to move to the the passenger seat to get the right bottom corner of the shade into the bottom right corner of the passenger side of the windshield first, then everything else fell into place.
I'll try it again from the driver's seat, but I think because it's a snug fit, it needs to be seated well into the bottom corners so that the top of the shades don't stick out too high to impede movement of the visors.
I'm glad it's working well. Definitely the nicest sun shades I've ever handled. Excellent materials & build quality.