I'm patiently waiting for my new earrings from James Allen and checking out all the diamond studs on Show Me the Bling! I keep seeing mention of "heavy" friction backs for earrings. Is this something you must specifically ask for or is it standard with most PS vendors? Can I get heavier backs later if mine are standard size? Does anyone know if the standard issue JA earring backs are heavy enough? I did just try to call their customer support but they are closed so I'm hoping you fellow PSers will be able to help.