200NL - KK preflop faces 4 bet???

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Full Tilt Poker - No Limit Hold'em Cash Game - $1/$2 Blinds - 6 Players - (LegoPoker HH Converter)

<font color="black">SB: $304.05</font>
BB: $268.00
UTG: $142.50
MP: $473.60
<font color="black">Hero (CO): $307.95</font>
<font color="black">BTN: $400.65</font>

<font color="black">Reads: </font><font color="blue">Ok....button is 27/12 and had not seen him minraise before this.
SB is a 16/6 unknown.

WTF is up here and what is your action preflop? I can\'t tell if I\'m against aces or junk....?</font>

<font color="black">Preflop:</font> Hero is dealt K[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img] (6 Players)
2 folds, <font color="red">Hero raises to $7.00</font>, <font color="red">BTN raises to $12.00</font>, <font color="red">SB raises to $20.00</font>, BB folds, Hero...