Live Link not capturing individual eyebrow movements

How can I set Live Link to capture each eyebrow’s movement individually? I see there are separate curves/morph targets, but it doesn’t seem to register individual eyebrow movement (and barely records eyebrows at all–I really have to crank the curves afterwards to get them to register).

Google arkit eyebrows, but I am 99% certain that unfortunate may ARkit has very very limited eyebrow support :frowning: