25NL - AJo, value bet river?

[VLV]

Villain is 36/21/2.6 over 127 hands.

Full Tilt Poker, $0.10/$0.25 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

Hero (MP): $26.70
CO: $17.30
BTN: $44.80
SB: $54.70
BB: $26.20
UTG: $67.20

Pre-Flop: J[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/diamond.gif[/img] dealt to Hero (MP)
UTG calls $0.25, <font color="red">Hero raises to $1.10</font>, 4 folds, UTG calls $0.85

Flop: ($2.55) 4[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/heart.gif[/img] (2 Players)
UTG checks, <font color="red">Hero bets $2</font>, UTG calls $2

Turn: ($6.55) T[img]/images/graemlins/club.gif[/img] (2 Players)
UTG checks, <font color="red">Hero bets $4</font>, UTG calls $4

River: ($14.55) K[img]/images/graemlins/spade.gif[/img] (2 Players)
UTG checks, Hero ???

I have only been at the table for a few hands, although I have seen villain c/c turn w/ T high flush, and lead river a few hands ago. So I don't think he would have a very solid hand here, but I can't really rule out a weak K. The pot is also large enough that I pretty much commit myself with anybet.