KK in BB - big pot, turn fold

[Fiddler]

Second or third orbit with players I've never seen before. SB has been loose and passive (except for a betting into pf-raisers), calls a lot. Button hasn't been involved in a lot of hands.

PokerStars 2/4 Hold'em (6 handed) converter

Preflop: Hero is BB with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">2 folds</font>, Button calls, SB completes, <font color="#CC3333">Hero raises</font>, UTG calls, Button calls, SB calls.

Flop: (8 SB) Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero raises</font>, UTG calls, <font color="#CC3333">Button 3-bets</font>, SB calls, <font color="#CC3333">Hero caps</font>, UTG folds, Button calls, SB calls.

Turn: (11 BB) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, SB calls, Hero folds.

I guess the flop cap and turn lead could be debatable. Opinions?