Would it be absurd to suggest making an appointment to go there in person? Like a little 3 day trip? They can start the settings ahead of time without the stones, and then set them while you're in town, and then angle them while you're there, so you can be sure they're right. I am sure Southwest has a darn cheap flight round trip, then you can do a little fun shopping and stuff there too. And yknow, try stuff on.