A set, a scare card, and a check raise

[qbler]

This one's from last night's 25K stars rebuy. Hero just moved to this table a couple orbits ago but has seen villain be fairly active. Raised from CO and called a push from the BB who had roughly the same stack with A8 and sucked out on AK, and just 2 hands ago limp/pushed AQ offsuit UTG+1. Can hero make this call? Should I have bet more on the flop or preflop? Note that the converter's not working completely right, blinds were 600/1200 with a 75 chip ante so there's 8475 in the pot after the flop.

PokerStars No-Limit Hold'em Tourney, Big Blind is t1200 (9 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

MP2 (t17157)
MP3 (t14036)
CO (t24510)
Button (t19461)
SB (t21408)
<font color="#C00000">BB :#A500AF(Villain)/ (t80190)</font>
UTG (t43140)
UTG+1 (t3145)
<font color="#C00000">Hero (t46152)</font>

Preflop: Hero is MP1 with K[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to t3600</font>, <font color="#666666">5 folds</font>, BB :#A500AF(Villain)/ calls t2400.

Flop: (t6600) K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets t3600</font>, Villain calls t3600.

Turn: (t13800) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets t6000</font>, <font color="#CC3333">Villain raises to t72915</font>, Hero...