T00thfairy go to predents.com and you will see that those scores are above/at average for just about every school in the US... unless you have a horrendous GPA you should not retake... unless you want to go to Harvard or something.
The question itself is legitimate but seeing your scores the answer is "you're fine." Solid scores on the sciences, you killed the PAT. Man, competition is just heating up waaay too much this cycle.
Considering that 50% of applicants get placed somewhere, I'd say being in the 84% and 91% percentiles is pretty good... I thought most people knew what averages were before taking the test, especially averages for getting into their number 1.