Nuts OOP, please help.. my lines are all messed up.

I know im loosing value when holding the nuts OOP.. so where do i give opponent(s) a chance to make a mistake? The turn, the river, or neither because im out of position? I feel like i need to check raise.. but im scared of missing a bet..

I've pretty much stopped slowplaying all together, and i get sucked out on less, but im also missing out on my monsters..... any input would be great...

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

UTG ($97.15)
MP ($108.25)
CO ($17.50)
Button ($43.20)
Hero ($102.60)
BB ($40)

Preflop: Hero is SB with 9[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, MP calls $1, <font color="#666666">2 folds</font>, Hero completes, BB checks.

Flop: ($3) 4[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $2</font>, BB folds, MP calls $2.

Turn: ($7) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $3</font>, MP calls $3.

River: ($13) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $6</font>, MP folds.

Final Pot: $19

Results in white below: <font color="#FFFFFF">
Hero has 9s As (flush, ace high).
Outcome: Hero wins $19. </font>