Noob Xtal (the one on your 57th street) and the JF Xtal are slightly different. Here you have 3 options:
- Ask to Domi/Guru if he has a 2xAR on a Noob Xtal, better if it's in mineral as it's 100% colorless;
- Send your factory Xtal to Domi that he makes the AR treatment on it;
- Send your watch and your 2xAR JF Xtal to Domi, he knows how to mod it...