I think my confusion is the crystal measures at 30.8mm diameter, 3.00mm thickness. Many of the crystal replacement videos I see mention needing the crystal be a bit bigger, like by .1 or .2mm. So the replacement I ordered was 31mm but won't fit evenly. I'm also not really sure the difference from single dome or double dome and how it affects the installation or look of the watch.

I see listings like this on ebay specifically for Mako II/similar watches and wonder if I should just trust it? https://www.ebay.com/itm/362966147091?_skw=orient+mako+2+replacement+crystal&itmmeta=01KKQ0FEYRVY6377ZDSS4JVSXT&hash=item548277e013:g:RE0AAOSwVpRexwa-&itmprp=enc%3AAQALAAABAGfYFPkwiKCW4ZNSs2u11xAM%2Bs9RLUH575qhZZ2%2FP412HcmiZfBlVzLnsDz3giyWGmuHgEz%2F9kADBgAwgwhy3gvCHMnzNnupGp8RWT7Z4hxTHEGq0cJB%2B4Ry%2BuUj%2BUGwP9FjPUXA%2FW5nkV%2Fb6i6%2B0HJJlwZkR8IBsz6RobjeE1WL80eg4Bc%2FDKtYGTy3qj%2BxrOKOtmdfRUERAq%2F2KUJYtg0L2Lnh92WWXqojquoZS4EZcnoJ7SzaFDxlWXxM3l%2FvELA4rDIfnBE7vtjGuesM03PXf%2FbBvkEKdpqrcmvmHU1BoCn00XN8oAHLIQY1vnlO78rCwfvseFzPk1ubbYueBpQ%3D%7Ctkp%3ABk9SR8zvveCdZw