NL50 - Flopped Set Turns Quads OOP

[CaptDrew]

Some notes first: I've been hammering this table from the blinds. Some of them have just started limping/playing back at me a bit, so I'm changing gears. That's why the limp from my BB. Villain is 24/3/1 over 125 hands, so passive, but is winning 75% of 36% at showdown. My big fear is that he's just plain happy about checking down the river based on his passivity. Short of leading the flop is there any other ideas about how to actually stack him? Was I just too cute here?

PokerStars No-Limit Hold'em, $0.50 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Hero ($69.15)
UTG ($20.75)
MP ($47.40)
Button ($92.25)
SB ($12.45)

Preflop: Hero is BB with 6[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, MP calls $0.50, Button calls $0.50, <font color="#666666">1 fold</font>, Hero checks.

Flop: ($1.75) Q[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">MP bets $2</font>, Button folds, Hero calls $2.

Turn: ($5.75) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP bets $5</font>, Hero calls $5.

River: ($15.75) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $10</font> but wonders if check-raising is better here.

What say you all?