KK (3flush flop) check-fold?

[Charlie_VB]

Could I be saving money in situations like this. Should I bet less or even c/fold?

Party Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter (http://www.legopoker.com/hh/))

<font color="black">SB: $65.35</font>
<font color="black">Hero (BB): $50</font>
<font color="black">UTG: $172.81</font>
<font color="black">MP: $60.70</font>
CO: $71.80
BTN: $47.95

<font color="black">Preflop:</font> Hero is dealt K/images/graemlins/heart.gif K/images/graemlins/spade.gif (6 Players)
UTG calls $0.50, <font color="red">MP raises to $2.50</font>, 2 folds, SB calls $2.25, <font color="red">Hero raises to $6.50</font>, UTG calls $6, MP calls $4, SB calls $4

<font color="black">Flop:</font> ($26) 6/images/graemlins/heart.gif T/images/graemlins/heart.gif 8/images/graemlins/heart.gif (4 Players)
SB checks, <font color="red">Hero bets $18</font>, 2 folds, SB calls $18

<font color="black">Turn:</font> ($62) T/images/graemlins/spade.gif (2 Players)
SB checks, Hero checks

<font color="black">River:</font> ($62) 3/images/graemlins/diamond.gif (2 Players)
<font color="red">SB bets all-in for $40.85</font>, Hero folds

Pot Size: $62