Mt Sinai asks for 3 research LORs, but I only have two long-term (10month and 2.5yr) research experiences. Before submitting, I called the admissions office and the woman I spoke to said it wouldn't be a problem. So I submitted, and I just got an email saying they need a third letter. Some previous posters have said Mt Sinai let them apply with two, and others have said Mt Sinai required all three letters. How can I get into the former catagory?