Caleb, unfortunately I think the combination of height, voice, facial hair, and perceived age is probably leading to most of your misgendering. Even outside of the university, I would imagine you're dressing more like an adult than a young teen (which to me is closer to the age you're passing at) -- likely leading people to assume female. I think I remember you saying in another thread about wanting to lose some weight - on that, I think lowering your body fat and developing some visible upper body muscle would help give more angle to your face and broaden your shoulders - both of which would help with passing.
