Have you worn the MOP or have it resized yet? If not and it's still within the return period, you can check with your SA on possibly exchanging it for the RG guilloche/carnelian and then pay for the difference. Otherwise, there isn't much you can do. Since you said you love the MOP bracelets, might as well just keep enjoying them. If your budget allowed, get the RG guilloche/carnelian too because we don't know how long VCA will keep offering it before they pull the plug again like 2 years ago. I was told that this is a permanent line so if you're not getting one this year you can always wait for the next relaunch.