while i'm no expert, i'd wager that depends mostly on your other application factors. with a strong gpa, recs, and statement of purpose, your scores should be perfectly fine. the other thing i'd consider is whether quantitative skills will be relevant for your research area. if so, it might be worth considering, but i'd recommend shooting an email to an admission's rep at a few schools of choice and see if they would be likely to factor it in. (though, strong performance in math, statistics, or logic oriented courses in undergrad could easily offset your score). you could also use this as an opportunity to acknowledge a potential weakness and explain how you're prepared to improve between now a dissertation day. after all, they don't want to hear about why you're perfect, because they know you're not. for a phd, they are foremost concerned with your compatibility with the specific program and the type of student you are. just my two cents.