AK gross board

[Profish2285]

I feel like I butchered this hand but Im really not sure. I figured the turn was a gross card which is why I checked but in retrospect, b/f could have been best. The fact that I checked the turn made me want to call this river bet but again, I dont know. Villain runs at 30/4/0.52

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker Hand History Converter

Hero (BB): $50.50
UTG: $112.10
MP: $52.70
CO: $54.35
BTN: $44
SB: $48.20

Pre-Flop: A[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img] dealt to Hero (BB)
3 folds, BTN calls $0.50, SB folds, <font color="red">Hero raises to $2.50</font>, BTN calls $2

Flop: ($5.25) J[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $3.50</font>, BTN calls $3.50

Turn: ($12.25) T[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, BTN checks

River: ($12.25) T[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $8</font>, Hero...