Hi! A good GRE score is no doubt important, but it is ONE of the many criteria that go into selecting a grad student, SOP and LORs being very important too. If you think you have great LORs and have few publications during your Masters, I would advise you to go ahead. But if the answer is no, then it would be wise to propbably retake the GRE, especially if your Quant score is low. Hope this helps!!