Baby Brezza

Got the Baby Brezza as a gift from a family member and trying to figure out the settings for kendmail goat. Did the bag test. The website says setting 4 but it dispensed over 11g. Went to try setting 3 (some people believe this is the setting). But, setting 3 dispensed about 10g.

The back of the can says 2 scoops is supposed to equal 8.6grams. Do I have to try every setting until I get the right one?

Any help would be appreciated. Twins arrive in approx 48 hours.