Overpair (KK) River Laydown

[allrightfine]

I have trouble putting LAG's on any sort of range. Is this river fold standard?

villain is 34/25/3 after 50 hands

Full Tilt Poker
$0.25/$0.50 No Limit Hold'em Ring Game
6 Players
LegoPoker Hand Converter

<font color="black">Stack Sizes</font>
Hero (UTG): $59.30
MP: $23.55
CO: $49.75
BTN: $49.75
SB: $54.85
BB: $85.45

<font color="black">Preflop:</font> K K[img]/images/graemlins/spade.gif[/img] ($0.75, 6 players)
<font color="red">Hero raises to $2</font>, MP folds, CO calls $2, BTN folds, SB folds, BB folds

<font color="black">Flop:</font> 8[img]/images/graemlins/spade.gif[/img] J 3[img]/images/graemlins/spade.gif[/img] ($4.75, 2 players)
<font color="red">Hero bets $3.50</font>, CO calls $3.50

<font color="black">Turn:</font> 8[img]/images/graemlins/spade.gif[/img] J 3[img]/images/graemlins/spade.gif[/img] [7[img]/images/graemlins/heart.gif[/img]] ($11.75, 2 players)
<font color="red">Hero bets $8</font>, CO calls $8

<font color="black">River:</font> 8[img]/images/graemlins/spade.gif[/img] J 3[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/heart.gif[/img] [2[img]/images/graemlins/spade.gif[/img]] ($27.75, 2 players)
Hero checks, <font color="red">CO bets $20</font>, Hero folds
Uncalled bet of $20 returned to CO