Should I retake the SAT Reasoning?

I took the test twice already. First time got a 1790, second time got a 1910; didn't study for either test. I was content with my score up until I decided to apply to Tufts (most definitely my "reach" school). I'm only 20 pts away from getting in the middle 50% for both critical reading and writing. Would it make a difference at this point for me to retake it?