I rarely post on here, but I've got a problem and would really appreciate some feedback.
I took the October 2011 LSAT and received a score of 169 after about 4 months of prep (started at a 157). My average score was about 172 for preptests 30-40 but 169/170 for the newer tests (50's). I had made the mistake of saving the newer tests until only 2 or 3 weeks before my test date and thus I wasn't accustomed to the change in test style/difficulty. I want to attend NYU very badly and so I reasoned that I needed about a 172 with my GPA (3.8 ) to have a strong chance of admission. I took about 5 months off and resumed my studying at the end of February to give myself over 3 months of studying for the retake.
I am now taking preptests and had the following scores since restarting:
PT 45 175 (-0 LG, -6 LR, -1RC)
PT 46 175 (-0 LG, -1 LR, -4RC)
PT 47 167 (-0 LG, -5 LR, -8RC)
Free PT 169 (-1 LG, -2LR, -6RC)
PT 48 172 (-0 LG, -2 LR, -4RC)
PT 61 166 (-4 LG, -5 LR, -8RC)
The 166 was the score I received today and I was quite distressed by it. Because it was the most recent PT I have taken, I put more weight on it being indicative of my possible score. My study schedule is currently taking one new pt a week and reviewing it, retaking an old PT I took the first time around and reviewing it, and I'm working through the LR bible (I've done the LG bible and Manhattan RC guides already).
Any advice? Is a retake even worth it if I may do worse than the first time around?

Any input would be helpful!