Obv fold on river but should i have folded on flop RR with KK?

[Donkey5layer]

Villian is 27/4 over 180 hands but no real reads


Full Tilt Poker
No Limit Holdem Ring game
Blinds: $1/$2
6 players
Converter

Stack sizes:
UTG: $207.40
UTG+1: $100.80
CO: $241.60
Hero: $201.80
SB: $193
BB: $215.40

Pre-flop: (6 players) Hero is Button with K[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/club.gif[/img]
3 folds, <font color="#cc0000">Hero raises to $7</font>, SB calls, BB folds.

Flop: 8[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/diamond.gif[/img] ($16, 2 players)
SB checks, <font color="#cc0000">Hero bets $16</font>, <font color="#cc0000">SB raises to $32</font>, Hero calls.

Turn: Q[img]/images/graemlins/club.gif[/img] ($80, 2 players)
SB checks, Hero checks.

River: A[img]/images/graemlins/club.gif[/img] ($80, 2 players)
<font color="#cc0000">SB bets $78</font>, Hero folds.
Uncalled bets: $78 returned to SB.

Results:
Final pot: $80