Modern 2 stroke oils will , as advertised , work well at ratios up to 50:1 in MODERN bikes . My old stand by Spectro GS2 in the black bottle will work well down to 32:1 but may just kill plugs . don't be tempted to go to a hotter plug just tank full by tank full wean it off the juice a bit till the plugs seem to survive . I'm guessing that you will end up around 40 to 42:1 . For vintage bikes Amsoil made a 100:1 product that I used for a time in oil injected bikes as a bit of insurance , I mixed it about 200:1 and if the bike suddenly gained power and quit smoking I shut it off . Being a mad scientist and experimenter I usually added a bit of Blendzall racing castor and octane booster just because I like the smell and Castrol R is so hard to find . The Amsoil never hurt and may have prevented a costly seizure or two the Blendzall never hurt but I have no idea if it helped .
your mileage may vary
~kop